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for science: does zfs deduplication work on intros of tv shows?
| for shows with identical intros, mkv format supports linking to a separate file to store it. the separate file just has to be in the same directory. | i challenge you to record 30 seconds of a fixed test pattern from tv on two separate occasions and have it encode to identical bits. i don't think it can be done.many media formats (including all digital tv formats) encode a rolling hardware timestamp of 33 bits (or more) which won't be the same for two separate segments by random chance. audio, video, subtitles and other metadata will be ordered differently in the stream because they all comes from sources that have their own separate clocks. synchronization between clocks at different stages in the media pipeline will cause different frames in the sequence to be dropped, padded, made into keyframes, etc, which then affects every bit in subsequent frames. tv stations use time-based watermarks. tv stations use digital compositing software that may retain bits from previous frames on an ongoing basis. many studio media pipelines still involve analog steps.the list of complications goes on.unless your pipeline is lossless, uses only digital sources and uses totally synchronized clocks for all stages, you're about as likely to get an md5 hash collision by accident as you are to get any two non-trivial sequences of compressed video to be bit-identical. |
for science: does zfs deduplication work on intros of tv shows?
| i challenge you to record 30 seconds of a fixed test pattern from tv on two separate occasions and have it encode to identical bits. i don't think it can be done.many media formats (including all digital tv formats) encode a rolling hardware timestamp of 33 bits (or more) which won't be the same for two separate segments by random chance. audio, video, subtitles and other metadata will be ordered differently in the stream because they all comes from sources that have their own separate clocks. synchronization between clocks at different stages in the media pipeline will cause different frames in the sequence to be dropped, padded, made into keyframes, etc, which then affects every bit in subsequent frames. tv stations use time-based watermarks. tv stations use digital compositing software that may retain bits from previous frames on an ongoing basis. many studio media pipelines still involve analog steps.the list of complications goes on.unless your pipeline is lossless, uses only digital sources and uses totally synchronized clocks for all stages, you're about as likely to get an md5 hash collision by accident as you are to get any two non-trivial sequences of compressed video to be bit-identical. | if you were going to do this for science, a good start would be to analyze the intro of shows in question, using rudimentary tools such as md5sum on a per-block basis.you would then quickly discover that the chances of huge gains would be small, without ever even looking into the zfs aspects. |
for science: does zfs deduplication work on intros of tv shows?
| if you were going to do this for science, a good start would be to analyze the intro of shows in question, using rudimentary tools such as md5sum on a per-block basis.you would then quickly discover that the chances of huge gains would be small, without ever even looking into the zfs aspects. | since videos from the itunes store are encrypted, it seems like the individual files should look like random noise to the filesystem anyway. unless there is something i don't understand happening. |
for science: does zfs deduplication work on intros of tv shows?
| since videos from the itunes store are encrypted, it seems like the individual files should look like random noise to the filesystem anyway. unless there is something i don't understand happening. | the reason i assumed deduplication wouldn't be effective on tv shows is because the intro isn't always at the same point as most shows have a prelude these days. since the preludes are of different lengths, it means that certain things like key frames (if used on that particular codec) would appear on different frames of the intro sequence. which makes me wonder how effective deduping would be on older tv shows where the intro is at the start of the programme.as for compression being largely ineffective, the shows are already compressed anyway. in fact file system compression seems to be less relevant these days as most modern file formats have compression built in (even office documents are just zip files). but as the author said, the overhead for compression isn't damaging for the performance* of zfs - unlike with deduplication* zfs compression is particularly performant† when using the newer lz4 algorithm available in openzfs - which i'd highly recommend people using if they're not already.† i know "performant" isn't technically a word. but it should be. |
interview with terence tao
| i mean you need a certain amount of base mathematics so that you can learn everything else quickly. but once you have the foundation, it’s fairly quick.shame the interviewer did not proceed to ask him what he considers this foundation to be, i think the question almost suggests itself. | thanks for posting this. salient point for me was the following bit i'd never considered before, but explains quite well the feeling i've had about testing for a long time.there’s a great observation called goodhart’s law that basically says any metric becomes useless once you start using it for control purposes. so the sat, for example, is a good general test of academic aptitude. but since it’s used so much for admission to college, kids are trained and coached. they spend lots of time and effort, specifically to improve their sat score at the expense of a well-rounded education, to the point where [the sat] may not be such a good guide to general academic excellence, even though it used to be before students started optimizing |
interview with terence tao
| thanks for posting this. salient point for me was the following bit i'd never considered before, but explains quite well the feeling i've had about testing for a long time.there’s a great observation called goodhart’s law that basically says any metric becomes useless once you start using it for control purposes. so the sat, for example, is a good general test of academic aptitude. but since it’s used so much for admission to college, kids are trained and coached. they spend lots of time and effort, specifically to improve their sat score at the expense of a well-rounded education, to the point where [the sat] may not be such a good guide to general academic excellence, even though it used to be before students started optimizing | a: i used to have more. when you work and you have family, it’s tough. when i was younger i used to watch a lot anime and play computer games and so forth, but i have no time for these things anymore.he taught in australia for a little while. i was in one of his classes and i watched some roruoni kenshin with him. he was probably the best math lecturer i've had. but i was a poor student. |
interview with terence tao
| a: i used to have more. when you work and you have family, it’s tough. when i was younger i used to watch a lot anime and play computer games and so forth, but i have no time for these things anymore.he taught in australia for a little while. i was in one of his classes and i watched some roruoni kenshin with him. he was probably the best math lecturer i've had. but i was a poor student. | perhaps the best thing of the article is his willingness to do an ama on reddit. :-) fingers crossed! |
interview with terence tao
| perhaps the best thing of the article is his willingness to do an ama on reddit. :-) fingers crossed! | the funny thing about mathematics is that you don’t work with regular numbers so much. i never see a 37, i see ‘n’ –a lot of what i do involves a big number n that goes to infinity. never any specific number.an interesting answer to probably the most common question that mathematicians are asked. radiolab[0] covered this and the significance of "favorite/lucky numbers" in a podcast a couple of months back.[0] - <link> |
the manager and the moron (1967)
| this is a great article for the corporate titans of yesteryear, which puts today's 'innovation malaise' into perspective (as well as putting the it boom in a historical context). for instance :"""
perhaps the greatest shock to our rip van winkle economist, however, would be the fact that, with the exception of the plastics industry, the main engines of growth in the past 50 years were already mature or rapidly maturing industries, based on well-known technologies, back in 1913.
"""and"""
within the next ten years, information will become very much cheaper. an hour of computer time today costs several hundred dollars at a minimum; i have seen figures that put the cost at about a dollar an hour in 1973 or so. maybe it won’t come down that steeply, but come down it will.
"""overall, a very interesting read. | some pretty funny gems in there, e.g.:"to be sure, the computer has created something that had never existed in the history the world—namely, paying jobs for mathematicians." |
the manager and the moron (1967)
| some pretty funny gems in there, e.g.:"to be sure, the computer has created something that had never existed in the history the world—namely, paying jobs for mathematicians." | "but the real impact will come with the big freight jets, which will make every airstrip in the world a deep-water port. in a few years, they may make the ocean-going freighter, man’s oldest efficient transportation, look roughly the way the railroads began to look around 1950."and yet, it's rather the reverse. air cargos exist, but they're low weight, high volume.from the us dot "freight transporation, global highlights 2010", total world ocean freight exports were 8,032 million short tons in 2007.total air freight handled by the top 25 world airports was 34.535 million tons.that's 234 tons of ocean cargo per ton of air cargo.the real revolution was in containerization, not air freight.the leading seaport (shanghai) handled 561.446 million tons of freight.the leading airport (hong kong), only 1.462 million.the energy cost of air travel per ton mile is roughly 250 times that of ocean cargo -- about 5.9 ton miles per gallon for a boeing 777 (i don't have 747 numbers handy), vs. about 1500 ton miles/gallon for a large container ship. |
the manager and the moron (1967)
| "but the real impact will come with the big freight jets, which will make every airstrip in the world a deep-water port. in a few years, they may make the ocean-going freighter, man’s oldest efficient transportation, look roughly the way the railroads began to look around 1950."and yet, it's rather the reverse. air cargos exist, but they're low weight, high volume.from the us dot "freight transporation, global highlights 2010", total world ocean freight exports were 8,032 million short tons in 2007.total air freight handled by the top 25 world airports was 34.535 million tons.that's 234 tons of ocean cargo per ton of air cargo.the real revolution was in containerization, not air freight.the leading seaport (shanghai) handled 561.446 million tons of freight.the leading airport (hong kong), only 1.462 million.the energy cost of air travel per ton mile is roughly 250 times that of ocean cargo -- about 5.9 ton miles per gallon for a boeing 777 (i don't have 747 numbers handy), vs. about 1500 ton miles/gallon for a large container ship. | aside from the debate over the mit has/has-not a computer in 1967 or will in 1987, i think the more interesting aspect of the piece is the normative suggestions it has in terms of thinking about how computers should be used in organizations.the notion that it eliminates the instinctual and actually introduces information is actually an incredible insight to have at the dawn of available(ish) computing. one developed, if one had any sense, a reasonably good instinct for what
invention was plausible and likely to fly, and what wasn’t. but real
information just wasn’t to be had. now, for the first time, it’s beginning to be
available—and the overall impact on society is bound to be very great
looking at the behavior of large organizations it's clear to see that many of them have not internalized this insight. in terms of exploiting what computers can mean for non-technically oriented organizations we haven't gotten much farther than the payrolls he mentions, " i’m not saying we shouldn’t be using the computer for payrolls, but that’s beside the point. if payrolls were all it could do, we wouldn’t be interested in it."it's always nice to chew on some good old thoughts that are still relevant. |
the manager and the moron (1967)
| aside from the debate over the mit has/has-not a computer in 1967 or will in 1987, i think the more interesting aspect of the piece is the normative suggestions it has in terms of thinking about how computers should be used in organizations.the notion that it eliminates the instinctual and actually introduces information is actually an incredible insight to have at the dawn of available(ish) computing. one developed, if one had any sense, a reasonably good instinct for what
invention was plausible and likely to fly, and what wasn’t. but real
information just wasn’t to be had. now, for the first time, it’s beginning to be
available—and the overall impact on society is bound to be very great
looking at the behavior of large organizations it's clear to see that many of them have not internalized this insight. in terms of exploiting what computers can mean for non-technically oriented organizations we haven't gotten much farther than the payrolls he mentions, " i’m not saying we shouldn’t be using the computer for payrolls, but that’s beside the point. if payrolls were all it could do, we wouldn’t be interested in it."it's always nice to chew on some good old thoughts that are still relevant. | i thought his comments on management were quite interesting regarding how management would have to change.""" our greatest managerial failure rate comes in the step from middle to top management. most middle managers are doing essentially the same things they did on their entrance jobs: controlling operations and fighting fires. in contrast, the top manager’s primary function is to think. the criteria for success at the top level bear little resemblance to the criteria for promotion from middle management.the new top manager, typically, has been promoted on the basis of his ability to adapt successfully. but suddenly he’s so far away from the firing line that he doesn’t know what to adapt to—so he fails. he may be an able man, but nothing in his work experience has prepared him to think. he hasn't the foggiest notion how one goes about making entrepreneurial or policy decisions. that’s why the failure rate at the senior-management level is so high. in my experience, two out of three men promoted to top management don’t make it; they stay middle management. they aren’t necessarily fired. instead, they get put on the executive committee with a bigger office, a bigger title, a bigger salary—and a higher nuisance value because they have had no exposure to thinking. this is a situation we are going to eliminate.from experience, i think this is still somewhat apt today in that we push people to go through the grunt -> middle manager -> upper management chain with a detour through an mba program possibly tossed in for good measure rather than grooming people to think and develop a different kind of leadership. it's an interesting thought.i'm not sure how applicable it is to entrepreneurship as to small to mid-size companies, but i think it's worth nothing.interesting stuff! |
universal ssl
| first, let me say that the aggressive approach to actually making encryption happen that cloudflare has been pushing recently is very commendable. the hard part about finally retiring the old plaintext protocols we currently are stuck with is critical mass - nobody sees the point when plaintext seems to "work just fine". the various steps cloudflare has taken to encourage ssl will go a long way towards reversing that attitude.that said, i worry about the future we are creating by entrusting so much security and traffic to a single point of failure.[1]it seems to me that cloudflare is positioning themselves as another google or facebook, where a key feature of their business is that they get to track the web history of a large portion of internet users. much like google gets to have a lot of my email when other party is @gmail.com, cloudflare gets click histories by people using their cdn and caching/filtering servers.while i don't really know anything about the motives and personalities behind the company, i can give them the benefit of the doubt for now. unfortunately, their motives don't matter - in a world where "national security letters" prism, xkeyscore, and the like exist, cloudflare's motives may not matter.even more concerning is that while it my hard to avoid google's tracking, it is at least theoretically possible. with cloudflare (or any similar service) we are stuck with a situation similar to tinyurl/t.co/bit.ly [2] where content is hidden behind serves from which you have to request the real url (or in this case, the content itself).don't get me wrong - ssl becoming significantly more common is good regardless of what else is going on, and cloudflare still deserves a lot of praise for advancing a problem that has been so resistant to progress in the past. i would even agree that cloudflare's caching services and security protections are (very) good engineering techniques that we should be using. it just seems like everybody is (yet again) setting up a single point of failure that will suddenly have very significant consequences the minute somebody with real power decides they want those very-revealing server logs.[1] i'd be the first to admit i don't have the best understanding of how cloudflare works; corrections to any misunderstandings i may have about their business or tech would be greatly appreciated.[2] <link> | this was indeed a pleasant surprise when i logged into my cloudflare account.what intrigues me is that cloudflare missed an opportunity to allow secure self-signed certificates.the new cloudflare ssl setup allows the origin server to present to cloudflare's servers either (i) an unverified self-signed certificates; or (ii) a certificate signed by a ca. neither provides great security. in the former case, a mitm can trivially generate a new self-signed certificate. history has shown the latter case is also problematic, as there have been several events where cas have generated invalid keys [1].what would be nice is if i could generate a self-signed certificate and upload the fingerprint(s) to cloudflare. cloudflare would could then verify the fingerprint when connecting to my origin server, without needing to trust a ca.am i missing anything obvious as to why this wouldn't be as secure (or more secure) than the two options cloudflare has introduced?[1]: for instance: <link> |
universal ssl
| this was indeed a pleasant surprise when i logged into my cloudflare account.what intrigues me is that cloudflare missed an opportunity to allow secure self-signed certificates.the new cloudflare ssl setup allows the origin server to present to cloudflare's servers either (i) an unverified self-signed certificates; or (ii) a certificate signed by a ca. neither provides great security. in the former case, a mitm can trivially generate a new self-signed certificate. history has shown the latter case is also problematic, as there have been several events where cas have generated invalid keys [1].what would be nice is if i could generate a self-signed certificate and upload the fingerprint(s) to cloudflare. cloudflare would could then verify the fingerprint when connecting to my origin server, without needing to trust a ca.am i missing anything obvious as to why this wouldn't be as secure (or more secure) than the two options cloudflare has introduced?[1]: for instance: <link> | how can they automatically provision a certificate? do they run or partner with a ca that doesn't require validation by the actual domain owner?edit: if so, then what little trust still existed in the https pki ca space just went out the window. |
universal ssl
| how can they automatically provision a certificate? do they run or partner with a ca that doesn't require validation by the actual domain owner?edit: if so, then what little trust still existed in the https pki ca space just went out the window. | i have very mixed feelings about this. yes, on the one hand this is great news because a lot of websites who otherwise never would have bothered with ssl can now be protected from snooping or traffic manipulation on your local (possibly very insecure: your neighborhood starbucks' wifi) network.on the other hand, this completely destroys the premise of https that you have an encrypted connection to the website you are visiting. if this catches on big time, seeing the padlock will only tell you that you have an encrypted connection to cloudflare's network, and no way of knowing if the traffic is still encrypted beyond that, or that it's flowing in plaintext between cloudflare and the actual target server. worse, you will have absolutely no way of knowing if the content you're seeing is what the target server originally sent, or that it has been manipulated (or wiretapped) by cloudflare itself or any of the other hops while en route.if you are going to use this, just keep in mind that you're giving cloudflare - a us company subject to the patriot act and the whole shebang of 3-letter agencies - the ability to collect, intercept, store, and manipulate every single byte of traffic sent between your users and your servers. |
universal ssl
| i have very mixed feelings about this. yes, on the one hand this is great news because a lot of websites who otherwise never would have bothered with ssl can now be protected from snooping or traffic manipulation on your local (possibly very insecure: your neighborhood starbucks' wifi) network.on the other hand, this completely destroys the premise of https that you have an encrypted connection to the website you are visiting. if this catches on big time, seeing the padlock will only tell you that you have an encrypted connection to cloudflare's network, and no way of knowing if the traffic is still encrypted beyond that, or that it's flowing in plaintext between cloudflare and the actual target server. worse, you will have absolutely no way of knowing if the content you're seeing is what the target server originally sent, or that it has been manipulated (or wiretapped) by cloudflare itself or any of the other hops while en route.if you are going to use this, just keep in mind that you're giving cloudflare - a us company subject to the patriot act and the whole shebang of 3-letter agencies - the ability to collect, intercept, store, and manipulate every single byte of traffic sent between your users and your servers. | interestingly, i just tried to visit one of my cloudflare protected sites. shoving https in front of the url results in this error in firefox & chrome.dabr.eu uses an invalid security certificate. the certificate is only valid for the following names: ssl2000.cloudflare.com, .redpitt.mobi, redpitt.mobi, cloudflare.com, .cloudflare.comso i assume it isn't quite as seamless / automated as it makes out?edit ah - a little further reading says it will roll out over the next few days. |
hacker news leaderboard
i just saw this today, the leaders are suffiently out-of-reach. | what's interesting to note here is that the points totals have been removed for the top 10. it used to show vast differences between the "leading pack" and the rest... of the order of 20k karma points or so!i guess the rationale for this change is to stop the silly competition (if there was any) once at the top of the pack. i'm not sure there ever was such a competition, mind you. i was #7 once upon a time and it never affected my posting habits. | this is sort of interesting to look at, but not too reliable: it only shows users whose profiles happen to be swapped in to the in-memory arc data structures whenever the list is regenerated. so from day to day, depending on post and caching and hn restart activity, different people are included or omitted. for example, at the moment raganwald isn't on the leaderboard, even though he has >40k karma, presumably because he hasn't posted in a bit, so his profile is swapped out of memory. i filed a bug about that but it got a wontfix [1].i ran into that while putting together a profile of prolific hn posters [2]. i put it together a bit at a time over several days, and noticed that people were appearing and disappearing from the list, which seemed odd. i ended up finding a third-party list on heroku that was more stable day-to-day [3]. however it seems not to be updating any more– the numbers are now a few months old.[1] <link>[2] <link>[3] <link> |
hacker news leaderboard
i just saw this today, the leaders are suffiently out-of-reach. | this is sort of interesting to look at, but not too reliable: it only shows users whose profiles happen to be swapped in to the in-memory arc data structures whenever the list is regenerated. so from day to day, depending on post and caching and hn restart activity, different people are included or omitted. for example, at the moment raganwald isn't on the leaderboard, even though he has >40k karma, presumably because he hasn't posted in a bit, so his profile is swapped out of memory. i filed a bug about that but it got a wontfix [1].i ran into that while putting together a profile of prolific hn posters [2]. i put it together a bit at a time over several days, and noticed that people were appearing and disappearing from the list, which seemed odd. i ended up finding a third-party list on heroku that was more stable day-to-day [3]. however it seems not to be updating any more– the numbers are now a few months old.[1] <link>[2] <link>[3] <link> | interestingly, within the top 100 there is a weak positive correlation between the total karma, and the average karma per comment, implying that the people at the top of the leaderboard are actually posting quality content, and not just making up for it with quantity.the closest power law fit is predicted average score = 0.27 * (total score) ^ 0.25
which has a correlation of about 20% with the actual average scores. |
hacker news leaderboard
i just saw this today, the leaders are suffiently out-of-reach. | interestingly, within the top 100 there is a weak positive correlation between the total karma, and the average karma per comment, implying that the people at the top of the leaderboard are actually posting quality content, and not just making up for it with quantity.the closest power law fit is predicted average score = 0.27 * (total score) ^ 0.25
which has a correlation of about 20% with the actual average scores. | this reminds me of those lists middle school boys and girls would make within their social circles. "cutest boy" or "nicest clothes" ... all pointless when looked upon as an older person, but at the time it was all that mattered. |
hacker news leaderboard
i just saw this today, the leaders are suffiently out-of-reach. | this reminds me of those lists middle school boys and girls would make within their social circles. "cutest boy" or "nicest clothes" ... all pointless when looked upon as an older person, but at the time it was all that mattered. | getting rid of scores on the top 10 was a step in the right direction, but ultimately the long-term goal should be to get rid of scores for the top 2000.slashdot used to have a thing where your karma would eventually just say something like, "lots". |
justwriting – markdown blog system
| i have a hard time understanding someone starting a new php project in august 2014 and choosing codeigniter. | here is a great list of a bunch of open source static site generators - some geared toward blogs and some to generic sites:<link> my project, just a happy user) |
justwriting – markdown blog system
| here is a great list of a bunch of open source static site generators - some geared toward blogs and some to generic sites:<link> my project, just a happy user) | i like the philosophy behind markdown: you write a simple text file and this is your article. if you want, you can fire up `pandoc` and convert it to html to make a nice website. then, make it a pdf for constant rendering.i personally started using markdown as well for my website. i have a simple makefile that finds `*.md` files and convert them to html using pandoc with some custom options. i can edit files very simply with vim instead of an online editor bloated with javascript. |
justwriting – markdown blog system
| i like the philosophy behind markdown: you write a simple text file and this is your article. if you want, you can fire up `pandoc` and convert it to html to make a nice website. then, make it a pdf for constant rendering.i personally started using markdown as well for my website. i have a simple makefile that finds `*.md` files and convert them to html using pandoc with some custom options. i can edit files very simply with vim instead of an online editor bloated with javascript. | this seems perfect for all my non-technical friends who want to blog. maybe a local wysiwyg text editor that converted to markdown would be the perfect complement for anyone who doesn't know it already. that, or maybe they should just learn markdown haha. |
justwriting – markdown blog system
| this seems perfect for all my non-technical friends who want to blog. maybe a local wysiwyg text editor that converted to markdown would be the perfect complement for anyone who doesn't know it already. that, or maybe they should just learn markdown haha. | how does this compare to <link> ? |
glaciers on google street view
| this is a great place, i was lucky enough to go back in 2005 and even caught a shot of a chunk breaking off <link> | this is a glacier in jasper, ab, canada as well. very cool to see in person.<link> |
glaciers on google street view
| this is a glacier in jasper, ab, canada as well. very cool to see in person.<link> | the route blanche outside chamonix gives a great view of the glacier des bossons, coming down off mont blanc:<link>,6.8476677,3a,41.4y... |
glaciers on google street view
| the route blanche outside chamonix gives a great view of the glacier des bossons, coming down off mont blanc:<link>,6.8476677,3a,41.4y... | aw, i hoped they got a camera on a glacier walk. that would be really neat.it's not quite glacier, but as far as remote places on street view go, iqaluit is pretty neat: <link> |
glaciers on google street view
| aw, i hoped they got a camera on a glacier walk. that would be really neat.it's not quite glacier, but as far as remote places on street view go, iqaluit is pretty neat: <link> | very cool!glaciers can also be seen on street view from iceland since some time back. here is one example, svinafellsjokul, where i visited last year. it's a powerful sight indeed.<link>,-16.8807936,3a,75y,13...edit: here is a view from further away where you can see the glacier coming down both sides of the mountain:<link>,-16.9436632,3a,75y,58... |
healthkit is losing people's data
| side note: i talked to an apple developer at wwdc and was told that healthkit data never leaves the device (isn't synced with icloud). hence the lack of the ipad app. given that, if the data is lost, its probably gone forever. | i am curious if it is related to just iphone6 models or if anyone is noticing it on the older models. i have an iphone5s and have had no problems so far. |
healthkit is losing people's data
| i am curious if it is related to just iphone6 models or if anyone is noticing it on the older models. i have an iphone5s and have had no problems so far. | i've had this happen a few times (iphone 6, ios8.0.2), but i've found that powering off my phone and restarting seems to restore the data. none of it is truly gone for me, it remains logged and listed, but it's almost like it cannot access the database of data that's stored and it gets a bit wonky but i'm not certain on that. hopefully apple will have it fixed for the next version or the app will be dead in the water. |
healthkit is losing people's data
| i've had this happen a few times (iphone 6, ios8.0.2), but i've found that powering off my phone and restarting seems to restore the data. none of it is truly gone for me, it remains logged and listed, but it's almost like it cannot access the database of data that's stored and it gets a bit wonky but i'm not certain on that. hopefully apple will have it fixed for the next version or the app will be dead in the water. | i've seen this problem and i think what's going on is that the service that's keeping the data is having problems catching up.i noticed yesterday that the data was missing. but it reappeared later (though the dashboard was missing). when checking the data manually (getting to somewhere that has data, like walking + running distance) and trying to get all the data, it seems to try to load data, but doesn't get it (spinning wheel)given that the data was available later the same day, i'm guessing that the problem is related to services that are not as available as they should, probably due scale after all the devices using ios 8.this is all speculation, of course. |
healthkit is losing people's data
| i've seen this problem and i think what's going on is that the service that's keeping the data is having problems catching up.i noticed yesterday that the data was missing. but it reappeared later (though the dashboard was missing). when checking the data manually (getting to somewhere that has data, like walking + running distance) and trying to get all the data, it seems to try to load data, but doesn't get it (spinning wheel)given that the data was available later the same day, i'm guessing that the problem is related to services that are not as available as they should, probably due scale after all the devices using ios 8.this is all speculation, of course. | the problem with healthkit is the lack of testing. developers may have had the beta app for months - but it couldn't do anything. the app relies (mostly) on data from third party apps and due to the beta testing limitations (100 devices) people running ios 8 betas couldn't install healthkit beta apps and test them with the healthkit app. same things applies to keyboards which i've found to be very buggy and i think most of it is on the os side not the keyboard app side. hopefully this won't be as big of an issue next year with the new testflight service (1000 users limitation). |
google classroom
| i think the public educational it system should not be outsourced to the private sector, where schools completely lose control of the data and depend more or less on the good will of the company. university courses should not be organized by facebook and pupils should not be forced to use it systems of non-trustworthy companies like google, which earn money by profiling their customers.
maybe my view is too german, but i think of education as an sovereign function of the state, where everything (theoretically) can be controlled by the citizens (yes, i know that this is some kind of optimistic). we should teach kids to think critical about centralization of data and knowledge and show them how to manage their digital lives with free and open tools which respect the users rights. | if this is a blackboard competitor, that's good news. google definitely has the bankroll and patent magazine to go toe-to-toe with them, which could open up a lot of options in the higher education space. |
google classroom
| if this is a blackboard competitor, that's good news. google definitely has the bankroll and patent magazine to go toe-to-toe with them, which could open up a lot of options in the higher education space. | crittenden middle school in mountain view has switched over to this, we love it. the amount of parent/student/teacher collaboration and transparency is unparalleled.btw: they're not using chrome books, but some kind of fancy hp android tablets. |
google classroom
| crittenden middle school in mountain view has switched over to this, we love it. the amount of parent/student/teacher collaboration and transparency is unparalleled.btw: they're not using chrome books, but some kind of fancy hp android tablets. | senior at the international academy here (a public high school in michigan). one of my classes uses google classroom.i think that google truly took a "google plus" look and morphed that into a website for teachers. i love how it has a clean and easy to use ui. the assignments are on a side bar, announcements are clearly displayed in a "stream". you can easily post a message to your class, and you have access to everyone's email (making it easy to communicate).teachers in my school have used three platforms. moodle, google classroom, and edmodo. quite frankly, i have come to like edmodo much more. they're identical to facebook, but the layout is so much better than the alternatives (in my preference). edmodo has truly thought everything out. |
google classroom
| senior at the international academy here (a public high school in michigan). one of my classes uses google classroom.i think that google truly took a "google plus" look and morphed that into a website for teachers. i love how it has a clean and easy to use ui. the assignments are on a side bar, announcements are clearly displayed in a "stream". you can easily post a message to your class, and you have access to everyone's email (making it easy to communicate).teachers in my school have used three platforms. moodle, google classroom, and edmodo. quite frankly, i have come to like edmodo much more. they're identical to facebook, but the layout is so much better than the alternatives (in my preference). edmodo has truly thought everything out. | if you are not a teacher or student actively using google classroom, you should pay attention to the comments from teachers and students here. or go talk to a local teacher for their impression.i've been doing that and the general response is overwhelmingly positive. others have already stated why. i would like to amplify those sentiments:+ many alternative solutions on the market are generally considered to be sub-par, such as moodle, blackboard, etc. (i personally love the open source concept behind moodle and have high hopes for them, but their implementation is oudated; fortunately, they know this and are working on it.)+ home-grown solutions are generally very poor for all kinds of reasons, including inability to find technical talent, bureaucracy and mismanagement, lack of budget, lack of project management, etc.+ google has a strong positive brand with teachers. while privacy concerns are growing, the overall community doesn't have the same stigma with google that many readers of hn have. google apps for education (gafe) already had a decent footprint within schools and google classroom is piggybacking off of that penetration.with that said, concerns about privacy, being operated by a separate for-profit, and comprehensiveness of features are great points and present ample opportunities for aspiring competitors. in some ways, google classroom just stepped up the game. if this causes anyone to release even better software for teachers and students, that's a great thing for teachers and students. |
datacoup – unlock the value of your personal data
| i briefly considered connecting my credit and debit cards to datacoup, but their dialog box set of warning bells. it asked for my card number and my online banking password. these are the same as my online banking credentials. in principle, with that information, datacoup would be able to log in to my bank's website and drain my accounts.it seems incredibly foolish to give this information to anyone over the internet. why should i trust datacoop with it? that's not a rhetorical question. | conceptually i love the idea. i have thought about this business idea for a long time, but never got over the issues with it to pursue it.the main insight i got when doing customer interviews was that many people don't like the idea of others accessing their data when its raised to the foreground, but are perfectly ok with it when it's "hidden". the other issue is that the amount of cash required to make this interesting for the avg. person is relatively high.on the business side, when interviewing vps marketing/sales, the #1 question asked was "what additional value does this bring beyond what we already have?". this is a valuable question to answer b/c massive amounts of data are already collected on each one of us. to be valuable, a business like datacoup needs to convert this data into insight that can be used to help companies to sell more.with all of that said, i hope datacoup is successful. it's a great idea and one that i personally like. |
datacoup – unlock the value of your personal data
| conceptually i love the idea. i have thought about this business idea for a long time, but never got over the issues with it to pursue it.the main insight i got when doing customer interviews was that many people don't like the idea of others accessing their data when its raised to the foreground, but are perfectly ok with it when it's "hidden". the other issue is that the amount of cash required to make this interesting for the avg. person is relatively high.on the business side, when interviewing vps marketing/sales, the #1 question asked was "what additional value does this bring beyond what we already have?". this is a valuable question to answer b/c massive amounts of data are already collected on each one of us. to be valuable, a business like datacoup needs to convert this data into insight that can be used to help companies to sell more.with all of that said, i hope datacoup is successful. it's a great idea and one that i personally like. | reminds me of an art installation that worked like an atm for your data. you plug in your cellphone and based on how much data it was able to scrape it would dispense money. usually less than a buck. was interesting to see how many people were willing to try it. |
datacoup – unlock the value of your personal data
| reminds me of an art installation that worked like an atm for your data. you plug in your cellphone and based on how much data it was able to scrape it would dispense money. usually less than a buck. was interesting to see how many people were willing to try it. | the most intriguing possibility here, imo, is the ability to show other people how much those free services really learn about them, and how much they sell. |
datacoup – unlock the value of your personal data
| the most intriguing possibility here, imo, is the ability to show other people how much those free services really learn about them, and how much they sell. | i was really hoping this was like google takeout, but with adaptors for all different sorts of services. i thought the value prop would be to backup and analyze your own data, not to sell it to the same people who already creep everyone out when facebook sells them your data. |
shellshock in the wild
| this is a really good article because it clearly lays out possible exploits; journalists could use this to more accurately report about this. | for the "stealing the password file" attack what they're actually getting is a list of users, not the hashed passwords. hashed passwords are stored in /etc/shadow in all recent (at least early 90s) systems.this is still bad since they now will have a list of possible usernames on the system but not nearly as bad as getting access to the hashed passwords as well. |
shellshock in the wild
| for the "stealing the password file" attack what they're actually getting is a list of users, not the hashed passwords. hashed passwords are stored in /etc/shadow in all recent (at least early 90s) systems.this is still bad since they now will have a list of possible usernames on the system but not nearly as bad as getting access to the hashed passwords as well. | cache: <link> |
shellshock in the wild
| cache: <link> | so i booted and put up my servers just for the heck of it since there's nothing i could care about being hacked in it. i was anyways going to wipe the servers and start from scratch. discovered quite a fun log today.basically several hackers have gotten in, installed wordpress, (and the whole apache mysql php stack with it) and done a bunch of other stuff and left without a trace (except for the log of course). crazy stuff. i'm wondering how many other websites have been hacked and aren't even bothering to check on it. |
shellshock in the wild
| so i booted and put up my servers just for the heck of it since there's nothing i could care about being hacked in it. i was anyways going to wipe the servers and start from scratch. discovered quite a fun log today.basically several hackers have gotten in, installed wordpress, (and the whole apache mysql php stack with it) and done a bunch of other stuff and left without a trace (except for the log of course). crazy stuff. i'm wondering how many other websites have been hacked and aren't even bothering to check on it. | i would just like to point out that, for all the talk of routers being vunerable, routers in general use busybox, which in turn uses ash shell as the default shell. most routers will not be vunerable unless bash was explicitly installed.<link> |
circle opens doors to global audience
| this homepage is fucking terrible. how can i use your product? what do i need? credit card? bitcoin address? fiat bank account? paypal?is it a joke? "we believe in intuitive design and excellent customer support"! a design so intuitive i have no fucking idea what the hell is going on. oh but you have some big depth of field photos of hot 19 year old girls on a beach. brilliant.just tell me in 1 sentence what you do. and it should be in the damn h1 tag. as it is it's not on the site at all. | if i can measure your priorities by viewing your site, it appears that your #1 priority is a certain look-and-feel (as dabeeeenster put it "photos of hot 19 year old girls on a beach"). along these lines, you have also purchased "circle.com" - do you read dave eggers too?your #2 priority must be investment, since the "management", "board", and "investors" sections of the site are the only ones that contain any actual information.[1] you have some impressive backers and impressive funding. in my experience, companies that are more excited about how much funding they have raised are less likely to succeed than companies that are excited about the product they are building.to sum it up: i am unimpressed.[1] - learning that you are "excited about bitcoin" isn't information. because of that excitement have you decided to offer bank accounts denominated in bitcoin? to offer a tool allowing merchants to accept bitcoin for daily purchases? to create a new offering that will supplant bitcoin? look -- we're all "excited" about bitcoin: it's an interesting innovation. being excited about it isn't news. |
circle opens doors to global audience
| if i can measure your priorities by viewing your site, it appears that your #1 priority is a certain look-and-feel (as dabeeeenster put it "photos of hot 19 year old girls on a beach"). along these lines, you have also purchased "circle.com" - do you read dave eggers too?your #2 priority must be investment, since the "management", "board", and "investors" sections of the site are the only ones that contain any actual information.[1] you have some impressive backers and impressive funding. in my experience, companies that are more excited about how much funding they have raised are less likely to succeed than companies that are excited about the product they are building.to sum it up: i am unimpressed.[1] - learning that you are "excited about bitcoin" isn't information. because of that excitement have you decided to offer bank accounts denominated in bitcoin? to offer a tool allowing merchants to accept bitcoin for daily purchases? to create a new offering that will supplant bitcoin? look -- we're all "excited" about bitcoin: it's an interesting innovation. being excited about it isn't news. | less marketing jargon, more actual content. what i find particularly fascinating is that bitcoin is mentioned a bunch of times passively without anyone ever saying "this is a bitcoin bank". it's like your supposed to just intuit the function of the site from a bunch of vague adjectives and adverbs like "everywhere" and "instant". |
circle opens doors to global audience
| less marketing jargon, more actual content. what i find particularly fascinating is that bitcoin is mentioned a bunch of times passively without anyone ever saying "this is a bitcoin bank". it's like your supposed to just intuit the function of the site from a bunch of vague adjectives and adverbs like "everywhere" and "instant". | first: interesting company and concept. i would love to see this go further, will be keeping my eye on it.second: who's idea was it to implement that wretched parallax effect on their homepage? not only is it a tawdry but it gives me vertigo which is usually a rare experience on the modern web and has thus-far created a very negative experience for me. i stopped looking at the homepage and just read the wikipedia article on the company instead so my eyes wouldn't hurt. |
circle opens doors to global audience
| first: interesting company and concept. i would love to see this go further, will be keeping my eye on it.second: who's idea was it to implement that wretched parallax effect on their homepage? not only is it a tawdry but it gives me vertigo which is usually a rare experience on the modern web and has thus-far created a very negative experience for me. i stopped looking at the homepage and just read the wikipedia article on the company instead so my eyes wouldn't hurt. | i'm afraid people (regular people - not the hn following sort of people) are going to start getting confused between all the circles and squares and stripes and so on. |
winning a/b results were not translating into improved user acquisition
| oh great, another misuse of a/b testinghere's the thing, stop a/bing every little thing (and/or "just because") and you'll get more significant results.do you think the true success of something is due to a/b testing? a/b testing is optimizing, not archtecting. | this article comes off as a bit boastful and somewhat of an advertisement for the company..."what threw a wrench into the works was that sumall isn’t your typical company. we’re a group of incredibly technical people, with many data analysts and statisticians on staff. we have to be, as our company specializes in aggregating and analyzing business data. flashy, impressive numbers aren’t enough to convince us that the lifts we were seeing were real unless we examined them under the cold, hard light of our key business metrics."i was expecting some admission of how their business is actually different/unusual, not just "incredibly technical". secondly, i was expecting to hear that these "technical" people monkeyed with the a/b testing (or simply over-thought it) which got them in to trouble .. but no, just a statement about how "flashy" numbers don't appeal to them.i think the article would be much better without some of that background. |
winning a/b results were not translating into improved user acquisition
| this article comes off as a bit boastful and somewhat of an advertisement for the company..."what threw a wrench into the works was that sumall isn’t your typical company. we’re a group of incredibly technical people, with many data analysts and statisticians on staff. we have to be, as our company specializes in aggregating and analyzing business data. flashy, impressive numbers aren’t enough to convince us that the lifts we were seeing were real unless we examined them under the cold, hard light of our key business metrics."i was expecting some admission of how their business is actually different/unusual, not just "incredibly technical". secondly, i was expecting to hear that these "technical" people monkeyed with the a/b testing (or simply over-thought it) which got them in to trouble .. but no, just a statement about how "flashy" numbers don't appeal to them.i think the article would be much better without some of that background. | >we decided to test two identical versions of our homepage against each other... we saw that the new variation, which was identical to the first, saw an 18.1% improvement. even more troubling was that there was a “100%” probability of this result being accurate.wow. cool explanation of one-tailed, two tailed tests. somehow i have never run across that. here's a link with more detail (i think it's the one intended in the article, but a different one was used): <link> |
winning a/b results were not translating into improved user acquisition
| >we decided to test two identical versions of our homepage against each other... we saw that the new variation, which was identical to the first, saw an 18.1% improvement. even more troubling was that there was a “100%” probability of this result being accurate.wow. cool explanation of one-tailed, two tailed tests. somehow i have never run across that. here's a link with more detail (i think it's the one intended in the article, but a different one was used): <link> | the red flag here for me was that optimizely encourages you to stop the test as soon as it "reaches significance." you shouldn't do that. what you should do is precalculate a sample size based on the statistical power you need, which involves determining your tolerance for the probability of making an error and on the minimum effect size you need to detect. then, you run the test to completion and crunch the numbers afterward. this helps prevent the scenario where your page tests 18% better than itself by minimizing probability that your "results" are just a consequence of a streak of positive results in one branch of the test.i was also disturbed that the effect size was taken into account in the sample size selection. you need to know this before you do any type of statistical test. otherwise, you are likely to get "positive" results that just don't mean anything.otoh, i wasn't too concerned that the test was a one-tailed test. honestly, in a website a/b test, all i really am concerned about is whether my new page is better than the old page. a one-tailed test tells you that. it might be interesting to run two-tailed tests just so you can get an idea what not to do, but for this use i think a one-tailed test is fine. it's not like you're testing drugs, where finding any effect, either positive or negative, can be valuable.i should also note that i only really know enough about statistics to not shoot myself in the foot in a big, obvious way. you should get a real stats person to work on this stuff if your livelihood depends on it. |
winning a/b results were not translating into improved user acquisition
| the red flag here for me was that optimizely encourages you to stop the test as soon as it "reaches significance." you shouldn't do that. what you should do is precalculate a sample size based on the statistical power you need, which involves determining your tolerance for the probability of making an error and on the minimum effect size you need to detect. then, you run the test to completion and crunch the numbers afterward. this helps prevent the scenario where your page tests 18% better than itself by minimizing probability that your "results" are just a consequence of a streak of positive results in one branch of the test.i was also disturbed that the effect size was taken into account in the sample size selection. you need to know this before you do any type of statistical test. otherwise, you are likely to get "positive" results that just don't mean anything.otoh, i wasn't too concerned that the test was a one-tailed test. honestly, in a website a/b test, all i really am concerned about is whether my new page is better than the old page. a one-tailed test tells you that. it might be interesting to run two-tailed tests just so you can get an idea what not to do, but for this use i think a one-tailed test is fine. it's not like you're testing drugs, where finding any effect, either positive or negative, can be valuable.i should also note that i only really know enough about statistics to not shoot myself in the foot in a big, obvious way. you should get a real stats person to work on this stuff if your livelihood depends on it. | note on sumallall users who use sumall should be wary of their service. we tried them out and we then found out that they used our social media accounts to spam our followers and users with their advertising. we contacted them asking for answers and we never heard from them. our suggestion: avoid sumall. |
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butterfly labs mined bitcoins on customers’ boxes before shipping
| again and gain, bitcoin doesn't seem to attract the purest minds... | i don't see a problem with this burn-in process. emc sells harddrives which they ran for two weeks in both a freezer and hot room (based on a company tour i took ages ago). they just want to make sure the hardware components they ship won't fail under heavy long-endurance load. i see that as a service to the customer. |
butterfly labs mined bitcoins on customers’ boxes before shipping
| i don't see a problem with this burn-in process. emc sells harddrives which they ran for two weeks in both a freezer and hot room (based on a company tour i took ages ago). they just want to make sure the hardware components they ship won't fail under heavy long-endurance load. i see that as a service to the customer. | if their boxes were true money printing machines, it's confusing to me why they'd bother selling them at all. |
butterfly labs mined bitcoins on customers’ boxes before shipping
| if their boxes were true money printing machines, it's confusing to me why they'd bother selling them at all. | as someone heavily involved in the bitcoin mining scene, this is not news.reports of dusty, obviously used machines were shipped to many a a bfl sucker.it's a legal grey area at best... companies should indeed test their products before shipping them to consumers.the problem here is that bfl tested them for "too long" before they arrived in the consumer's hands according to some, but not according to butterfly labs. |
butterfly labs mined bitcoins on customers’ boxes before shipping
| as someone heavily involved in the bitcoin mining scene, this is not news.reports of dusty, obviously used machines were shipped to many a a bfl sucker.it's a legal grey area at best... companies should indeed test their products before shipping them to consumers.the problem here is that bfl tested them for "too long" before they arrived in the consumer's hands according to some, but not according to butterfly labs. | what people don't understand is that when bfl mined with the hardware they sold, they effectively made the difficulty of the block chain rise stupidly fast, thus lowering the value of the system. any advantage customers (like me) would have had was thrown out the door.it is essentially the equivalent of a car dealer selling you a car claiming it is new when in fact they drove it 150,000 miles.i was told by a bfl employee that my order would have been shipped before the end of july 2013... i didn't get my units till 11/4/2013during that time i watched what could have been my returns fly out the door.to read the one skype chat log makes me sick |
california adopts college sex crime rule
| > under the bill, someone who is drunk, drugged, unconscious or asleep cannot grant consentthe "drunk" part of this has some potentially serious problems. it's fine in the case where someone deliberately gets someone else drunk in order to inhibit that person's judgement so that they will agree to sex. doing that to someone is vile. same if someone finds a drunk person, recognizes that they are in an impaired state of judgement, and takes advantage of them.however, what about the case where both parties are drunk, both parties got drunk voluntarily, and neither party is intending to use the other's drunken state to take advantage of them? you simply have drunk a ask if drunk b would like to have sex, and drunk b says yes, and they proceed to clumsily do so. if b's drunk state makes it so b cannot give consent, i think an equally good case can be made that a's drunk state makes it so a cannot recognize that b's "yes" is not valid.in general, drunk people pose thorny legal problems, especially when they interact with other drunk people. | quote: "lawmakers say, however, that consent can be non-verbal, if it is unambiguous."which means nothing has changed -- non-verbal consent has always been a possibility, and later, a reason to argue in court about whether non-verbal consent had been given. non-verbal consent in the relations between the sexes has always had the standing of a verbal contract in business -- as san goldwyn supposedly said, a verbal contract isn't worth the paper it's written on. (in keeping with our topic, goldwyn didn't actually say that.)i have some advice for young people who may be navigating their way around this issue for the first time -- here are the rules:1. no means no, absolutely, full stop. never ignore this signal, ever.2. yes means maybe.3. there is no "yes means yes" -- it doesn't exist.no matter how many laws are passed, no matter how clear the signals, a person can always claim that something happened that differs from your recollection, and that can sometimes lead to a huge raft of trouble.the concise way of describing such situations is, "he said, she said." this new law doesn't (and can't) change the fact that some sexual encounters will end up being a case of "he said, she said."the tl;dr: no means no, and yes means maybe. |
california adopts college sex crime rule
| quote: "lawmakers say, however, that consent can be non-verbal, if it is unambiguous."which means nothing has changed -- non-verbal consent has always been a possibility, and later, a reason to argue in court about whether non-verbal consent had been given. non-verbal consent in the relations between the sexes has always had the standing of a verbal contract in business -- as san goldwyn supposedly said, a verbal contract isn't worth the paper it's written on. (in keeping with our topic, goldwyn didn't actually say that.)i have some advice for young people who may be navigating their way around this issue for the first time -- here are the rules:1. no means no, absolutely, full stop. never ignore this signal, ever.2. yes means maybe.3. there is no "yes means yes" -- it doesn't exist.no matter how many laws are passed, no matter how clear the signals, a person can always claim that something happened that differs from your recollection, and that can sometimes lead to a huge raft of trouble.the concise way of describing such situations is, "he said, she said." this new law doesn't (and can't) change the fact that some sexual encounters will end up being a case of "he said, she said."the tl;dr: no means no, and yes means maybe. | startup idea: a cell phone recording app that begins recording with two thumbprints and then only plays back with both thumbprints. identity tied to the act of consent and to the act of reviewing consent.if it isn't around by the time my boys are in college, i might have to build it... |
california adopts college sex crime rule
| startup idea: a cell phone recording app that begins recording with two thumbprints and then only plays back with both thumbprints. identity tied to the act of consent and to the act of reviewing consent.if it isn't around by the time my boys are in college, i might have to build it... | it seems that there also needs to be legislation that if a student goes to a school official (or employee of any kind) and claims to have been sexually assaulted, the employee needs to be obligated to contact law enforcement. |
california adopts college sex crime rule
| it seems that there also needs to be legislation that if a student goes to a school official (or employee of any kind) and claims to have been sexually assaulted, the employee needs to be obligated to contact law enforcement. | this seems like a good change in general.> lawmakers say, however, that consent can be non-verbal, if it is unambiguous.it seems that the new contention point will become what 'non-verbal, yet unambiguous consent' is, since it seems difficult to define fully and concisely. |
adobe joins the chromebook party, starting with photoshop
| this is stupid. latency (which can't be reduced below the speed of light without circumventing the laws of physics) is incredibly detrimental to drawing and digital painting, two of photoshop's most popular use cases. a frame or two of lag really hurts responsiveness (a frequent concern when using a large brush on a slow pc), and network latency to nearby servers in the us starts at around 30ms and only gets worse. client side prediction helps a lot in video games, but predicting a graphics editor basically entails having the entire editor, at which point the "cloud" is doing nothing but storing your files.i will never understand why people are so obsessed with the extreme of the thin client ideal. they are a good choice in a world where the network is fast and low latency, while client devices are underpowered and expensive (vt100s in a lab with minicomputer in the next room). meanwhile, we've lived for at least the past two decades in a world where the network (on the cellular and home broadband ends) is slow and high latency but our client devices are incredibly powerful and cheap. the period of time where this makes any sense for anyone except for proprietary software vendors that want to close off any possibility of pirating their products has long since passed.the appeal of "compute clusters" for most "power user" tasks especially diminishes when you realize that shitty off-the-shelf pcs from 10+ years ago were perfectly capable of running programs that did most of same stuff as their modern versions. new functionality has been added, of course, but most of the increase in resource requirements came from selfish programming from generations of programmers that never learned how to optimize. there's no reason that a chromebook with a cheapo arm or low-end intel soc shouldn't be able to natively run a better optimized graphics program like paint tool sai with cpu time/battery to spare. | i am little bit concerned about the way technology trends these days.it feels like sooner or later, big companies will have all the hardware and software hosted on their side and people will only get access to play it according to companies rules.this is actually a concern to my freedom as well.i want to own my hardware and software power. i want to run everything offline if i want to. i don't want to click "i agree" button for all the actions i am doing.it also means everybody is kind of forced to use their devices how these big companies are decided to. they are selling you an apple, but they don't let you to eat it however you want.i will be happy as long as they give me the option(and not to force me use cloud) to keep my hardware and software on my side. |
adobe joins the chromebook party, starting with photoshop
| i am little bit concerned about the way technology trends these days.it feels like sooner or later, big companies will have all the hardware and software hosted on their side and people will only get access to play it according to companies rules.this is actually a concern to my freedom as well.i want to own my hardware and software power. i want to run everything offline if i want to. i don't want to click "i agree" button for all the actions i am doing.it also means everybody is kind of forced to use their devices how these big companies are decided to. they are selling you an apple, but they don't let you to eat it however you want.i will be happy as long as they give me the option(and not to force me use cloud) to keep my hardware and software on my side. | and this is the logical conclusion of the death of the 56k baud modem. there was a prophetic (if early) contest at sun to 'imagine the future' and the winner got a sparcstation. as a networking guy i tried to imagine what was going to change when the 'big yellow hose' (which is what 10mb ethernet looked like at the time) came right into your living room. and one of the things that changed was that you could work at 'home' like you did at work, which at the time was most of the stuff on a beefy server with lots of cpu + storage and just the x windows on the local machine. (this worked fine with a lot less than 10mb of bandwidth of course, but it was conceptually a 'return to mainframes' pitch)the economics are pretty sweet, given the marginal cost of one additional subscriber to a cloud 'hosted' environment. google drive / drop box gets the storage requirement out of the way. company x, acquires/operates a small server farm connected with a generic 10g pipe to the 'web' (this is an off the self config at places like switch in las vegas). sign up a bunch of subscribers where you have a 'free' tier to sop up excess compute and a paid tier for folks who care enough about response times to pay for them.the dependency on the network has always been troubling, but once the network is like house 'power'. so many things one does depend on the house having power available, making it a requirement becomes less and less onerous. combined with things that make traveling with data annoying (like cross border inspections) and i can see this as the future of application level computing for a lot of things.interesting that terminals are the future once again. |
adobe joins the chromebook party, starting with photoshop
| and this is the logical conclusion of the death of the 56k baud modem. there was a prophetic (if early) contest at sun to 'imagine the future' and the winner got a sparcstation. as a networking guy i tried to imagine what was going to change when the 'big yellow hose' (which is what 10mb ethernet looked like at the time) came right into your living room. and one of the things that changed was that you could work at 'home' like you did at work, which at the time was most of the stuff on a beefy server with lots of cpu + storage and just the x windows on the local machine. (this worked fine with a lot less than 10mb of bandwidth of course, but it was conceptually a 'return to mainframes' pitch)the economics are pretty sweet, given the marginal cost of one additional subscriber to a cloud 'hosted' environment. google drive / drop box gets the storage requirement out of the way. company x, acquires/operates a small server farm connected with a generic 10g pipe to the 'web' (this is an off the self config at places like switch in las vegas). sign up a bunch of subscribers where you have a 'free' tier to sop up excess compute and a paid tier for folks who care enough about response times to pay for them.the dependency on the network has always been troubling, but once the network is like house 'power'. so many things one does depend on the house having power available, making it a requirement becomes less and less onerous. combined with things that make traveling with data annoying (like cross border inspections) and i can see this as the future of application level computing for a lot of things.interesting that terminals are the future once again. | for those wondering how the "streaming" version of photoshop is implemented:project photoshop streaming is identical to the photoshop you’d install locally with a few notable exceptions. this build can be accessed from any chrome browser (windows only) or chromebook and does not require a full download and install. in other words, this is the same build of photoshop you’d typically download and install from creative cloud, however, instead of being installed on your local machine, it is running in a virtualized environment so can be accessed from any chrome browser or chromebook. because this version of photoshop is running in a virtualized environment, you open, save, export and recover files from/to your google drive rather than your local file share. also this beta version of the virtualized environment does not have support for gpu consequently gpu dependent features are not yet available (coming soon). this build also does not yet support for print.<link> |
adobe joins the chromebook party, starting with photoshop
| for those wondering how the "streaming" version of photoshop is implemented:project photoshop streaming is identical to the photoshop you’d install locally with a few notable exceptions. this build can be accessed from any chrome browser (windows only) or chromebook and does not require a full download and install. in other words, this is the same build of photoshop you’d typically download and install from creative cloud, however, instead of being installed on your local machine, it is running in a virtualized environment so can be accessed from any chrome browser or chromebook. because this version of photoshop is running in a virtualized environment, you open, save, export and recover files from/to your google drive rather than your local file share. also this beta version of the virtualized environment does not have support for gpu consequently gpu dependent features are not yet available (coming soon). this build also does not yet support for print.<link> | well this is interesting.their faq[0] contains some more information, but still does not explain everything. they say "however, instead of being installed on your local machine, it is running in a virtualized environment so can be accessed from any chrome browser or chromebook. because this version of photoshop is running in a virtualized environment, you open, save, export and recover files from/to your google drive rather than your local file share."it would seem that they are indeed streaming the video (vnc-style). more over, space requirement is only 350mb (photoshop is normally much bigger), and there's also this:"if network connectivity is lost, you will need to launch a new session. a recovery folder called ‘photoshop recovery’ will be created in the root of your google drive. to recover files, simply double click to open a file."overall, this doesn't sound good at all. if they are streaming screen "video", color correction and pixel-level precision in design is going to be tough. photoshop seems like one of the most difficult programs to work via vnc.[0]: <link> |
learning online
| just reading through hn during my (very boring) introductory to programming class in high school and noticed the name seemed familiar. thanks christina for tutoring me over the summer! the way programming is taught in high schools needs some serious reform - and reading this gave me a lot of insight into how people learn how to code (and how i wish this kind of thinking & super cool editor was implemented in my programming class). | seems like this is what thrun and other learning entrepreneurs didn't do - sit with his students and teach them without a full blown website.i would love to hear more about her work and insights.this is the kind of schlep that most any entrepreneurs are afraid to do. |
learning online
| seems like this is what thrun and other learning entrepreneurs didn't do - sit with his students and teach them without a full blown website.i would love to hear more about her work and insights.this is the kind of schlep that most any entrepreneurs are afraid to do. | i really enjoyed reading this piece. it echoed many of the thoughts i've had over the past ten years of teaching programming off and on, and many of the frustrations i've had with existing online learn-to-code tools. (i actually wrote one such tool back in 2007, an interactive learn-to-code webapp called the appjet learn to program guide.)in my experience, puzzling through problems with quick iteration and support from a mentor is the most effective way to learn programming. especially in the early stages, as christina identifies, the hardest task is simply articulating an algorithm in english:> for all the hemming about programming languages, the hardest part for these students was solving puzzles in english, not java. often, they’d skip to the java, glossing over their logic. this didn’t work, but “forget java for a moment; what are you trying to do in english?” and “how would you explain what you’re trying to do to a 5 year-old?” were the two questions most likely to unstick them. once they explained the logic – “go through all the letters. if you find an a, swap it with the prior letter” – the java came easily.nearly all online tools i've tried come up short in this regard, because of the major stumbling block that is building an accurate mental model (an "intuition") for how computers run your program. none of these tools tell you how to correct your mental model, because none of them really identify your mental model in the first place. for this, a human teacher is very useful!tools like the one christina is building -- tools that allow for quick iteration and quick communication between learner and teacher -- are critical in that they let teachers focus on the hard part, on developing that intuition.christina, i fully support your effort to create tools that help humans teach other humans how to program! |
learning online
| i really enjoyed reading this piece. it echoed many of the thoughts i've had over the past ten years of teaching programming off and on, and many of the frustrations i've had with existing online learn-to-code tools. (i actually wrote one such tool back in 2007, an interactive learn-to-code webapp called the appjet learn to program guide.)in my experience, puzzling through problems with quick iteration and support from a mentor is the most effective way to learn programming. especially in the early stages, as christina identifies, the hardest task is simply articulating an algorithm in english:> for all the hemming about programming languages, the hardest part for these students was solving puzzles in english, not java. often, they’d skip to the java, glossing over their logic. this didn’t work, but “forget java for a moment; what are you trying to do in english?” and “how would you explain what you’re trying to do to a 5 year-old?” were the two questions most likely to unstick them. once they explained the logic – “go through all the letters. if you find an a, swap it with the prior letter” – the java came easily.nearly all online tools i've tried come up short in this regard, because of the major stumbling block that is building an accurate mental model (an "intuition") for how computers run your program. none of these tools tell you how to correct your mental model, because none of them really identify your mental model in the first place. for this, a human teacher is very useful!tools like the one christina is building -- tools that allow for quick iteration and quick communication between learner and teacher -- are critical in that they let teachers focus on the hard part, on developing that intuition.christina, i fully support your effort to create tools that help humans teach other humans how to program! | hey, christina.really thought-provoking article! i've been teaching students to code for seventeen years, and your experience dovetails with mine. (disclosure: i'm also the author of 'learn java the hard way'.)i must admit that i'm skeptical that any "regular" student could learn java well enough to pass the apcs exam in only twenty hours.can you explain a little better about the population you're working with? these are high-aptitude students with prior programming experience, no? |
learning online
| hey, christina.really thought-provoking article! i've been teaching students to code for seventeen years, and your experience dovetails with mine. (disclosure: i'm also the author of 'learn java the hard way'.)i must admit that i'm skeptical that any "regular" student could learn java well enough to pass the apcs exam in only twenty hours.can you explain a little better about the population you're working with? these are high-aptitude students with prior programming experience, no? | "you’ll not be eaten by computers any more than folks were eaten by electricity 100 years ago."although i enjoyed the post and agree with a lot of it, i disagree with comparing coding skills to humans having access to electricity. in think coding today is like writing was 500 years ago.in the past you would hire a literate person to read your documents, write you letters, and so forth. today we hire programmers to help us get the most of our computers. i think reading and writing code will be the new way to make the most of computers in the future. it may not necessarily be through the coding tools and languages we have now.then again, i'm no ray kurzweil |
twitter flight invite page is built in coldfusion
| fyi. just because it's a cfm extension, doesn't mean that they are using coldfusion (which is adobe's cfml engine). they could very well be using railo (<link> or openbd (<link> both of which are free, open sourced and magnitudes faster then coldfusion. | as a longtime coldfusion user, and maybe one of the 3 of us who is remaining, i found this to be interesting. |
twitter flight invite page is built in coldfusion
| as a longtime coldfusion user, and maybe one of the 3 of us who is remaining, i found this to be interesting. | this is not that interesting. marketing pages like these are usually outsourced to agencies. this doesn't suggest that twitter itself will be moving their main stack to coldfusion. |
twitter flight invite page is built in coldfusion
| this is not that interesting. marketing pages like these are usually outsourced to agencies. this doesn't suggest that twitter itself will be moving their main stack to coldfusion. | this is the agency behind the site - <link> |
twitter flight invite page is built in coldfusion
| this is the agency behind the site - <link> | apple's investor relations website is also built with coldfusion - <link> - which is mostly likely not built by a consulting service.i'd bet that neither site uses adobe coldfusion, but rather the railo open source engine - <link> perception is that most developers that have built applications in cf have moved on to other languages and frameworks like go, clojure, ruby on rails, django, python, and node.js.while app development in cf has been on the decline for several years, there is still a very solid cms on the platform (mura) and is used by intel, nationwide insurance and few other high profile companies and colleges.what i found the most interesting was the use of "fuseaction" in the url - <link> is a convention that was used by the fusebox framework, which has been defunct for quite a long time. |
how to hack linkedin connections
| that's great, until you hit the maximum number of invitations sent (3,000) and maximum connections (30,000).so then what -- your linkedin profile is jammed with a bunch of people you're marginally related to for your professional network, which isn't going to be particularly useful to you. | this is pretty much on par with "hacking" your friend's facebook account by posting a status update when they forgot to log off |
how to hack linkedin connections
| this is pretty much on par with "hacking" your friend's facebook account by posting a status update when they forgot to log off | this is an amazing hack but it will eventually get you a slap on the wrist from linkedin. when enough people complain about unwanted "invites," you will be given a warning about violating terms of service. be careful about using this hack. |
how to hack linkedin connections
| this is an amazing hack but it will eventually get you a slap on the wrist from linkedin. when enough people complain about unwanted "invites," you will be given a warning about violating terms of service. be careful about using this hack. | and... how is that useful? (serious question) |
how to hack linkedin connections
| and... how is that useful? (serious question) | title could read, "how to click connect buttons by class name in a setinterval". |
our invisible rich
| inequality is increasing within western societies because inequality is decreasing on an earth-wide basis. the graph here shows the results in more detail. (<link> you are cool with the morality or utility argument that you need to take from the haves within a country to help the have-nots/increase velocity of money/etc., it seems to me you should at least be pre-disposed to do the same on a world-wide basis where the inequality/need is much greater. and if you are reading this in the us, the rich is you. roughly $32k a year in income makes you a one-percenter on a worldwide basis. | for whatever reason krugman chose to highlight the article by macdonald. the part of the article that had the most impact was bringing attention of michael harrington's book, "the other america" to president kennedy. that book, for better or worse was largely the impetus for lbj's great society. |
our invisible rich
| for whatever reason krugman chose to highlight the article by macdonald. the part of the article that had the most impact was bringing attention of michael harrington's book, "the other america" to president kennedy. that book, for better or worse was largely the impetus for lbj's great society. | 5 days ago paul krugman said the problem was that our rich were flaunting their wealth.[1] barely a week later, the problem is that the rich are invisible.[1] <link> |
our invisible rich
| 5 days ago paul krugman said the problem was that our rich were flaunting their wealth.[1] barely a week later, the problem is that the rich are invisible.[1] <link> | i'm still waiting to see a justification for anti-inequality talk other than asserting it as a moral imperative. what is the economic justification for more aggressive taxation? |
our invisible rich
| i'm still waiting to see a justification for anti-inequality talk other than asserting it as a moral imperative. what is the economic justification for more aggressive taxation? | i was hoping this article was going to provide some insight into the "private" rich -- people who are rich but don't report their income publicly -- which would have been far more interesting. |
why microsoft's engineering changes will be the real windows threshold story
| ... [that lets the os team see in near real-time what's happening on users' machines.] ... so this "near" is network latency? | i have a much bigger problem with ms. it has to do with a fundamental aspect of the windows architecture: the os holds your applications hostage.in the dos era applications had a huge degree of independence from the os. you could nuke the os, upgrade it, modify it and move machines and your apps worked just the same.today things are different. the os, by means of such "features" as te registry, holds applications hostage.say i have a five year old machine. i want to purchase (or more than likely, build) a new machine. in the past this was relativley painless. once the machine is up you move your apps and off you go. today this requires full re-installation of apps from scratch. it's a nightmare and it is one i contend has significant economic consequences. whereas someone like me might consider upgrading hardware every year or two, the financial math now includes the non trivial time and expense of reinstalling everything.we've done this a few times. with typical high end engineering workstations full of software it can easily take a month of installing and configuring software to get back to the setup you had before he upgrade. this isn't pallatable at all from more than one perspective. and so machines continue to be used as long as possible before upgrading anything that might trigger a reinstallation event.to me this is a major flaw in the design of windows. os, applications and data ought to be fully separable independent entities. i get all the advantages of dll reuse and centralized settings, etc. i still contend that this could be achieved at the cost of additional storage and some more smarts. a one terabyte hard drive is about $60 today. i could not care less if dll's need to be duplicated for each software installation in order to break lose from the os and registry as much as possible.the point is, if they are smart they ought to be able to figure it out. i ought to be able to install all my apps on a portable usb drive, walk up to any machine in the world, plug in and have my tools and files available for use instantly. that's the way it should work. |
why microsoft's engineering changes will be the real windows threshold story
| i have a much bigger problem with ms. it has to do with a fundamental aspect of the windows architecture: the os holds your applications hostage.in the dos era applications had a huge degree of independence from the os. you could nuke the os, upgrade it, modify it and move machines and your apps worked just the same.today things are different. the os, by means of such "features" as te registry, holds applications hostage.say i have a five year old machine. i want to purchase (or more than likely, build) a new machine. in the past this was relativley painless. once the machine is up you move your apps and off you go. today this requires full re-installation of apps from scratch. it's a nightmare and it is one i contend has significant economic consequences. whereas someone like me might consider upgrading hardware every year or two, the financial math now includes the non trivial time and expense of reinstalling everything.we've done this a few times. with typical high end engineering workstations full of software it can easily take a month of installing and configuring software to get back to the setup you had before he upgrade. this isn't pallatable at all from more than one perspective. and so machines continue to be used as long as possible before upgrading anything that might trigger a reinstallation event.to me this is a major flaw in the design of windows. os, applications and data ought to be fully separable independent entities. i get all the advantages of dll reuse and centralized settings, etc. i still contend that this could be achieved at the cost of additional storage and some more smarts. a one terabyte hard drive is about $60 today. i could not care less if dll's need to be duplicated for each software installation in order to break lose from the os and registry as much as possible.the point is, if they are smart they ought to be able to figure it out. i ought to be able to install all my apps on a portable usb drive, walk up to any machine in the world, plug in and have my tools and files available for use instantly. that's the way it should work. | what i would like to see from developer point of view, would be a winrt version of the os, using .net native while trying to fulfil the longhorn vision.lets see what really comes out. |
why microsoft's engineering changes will be the real windows threshold story
| what i would like to see from developer point of view, would be a winrt version of the os, using .net native while trying to fulfil the longhorn vision.lets see what really comes out. | [disclaimer: i use windows 7, but i did use windows 8 for 2 weeks then decided to go back]i'm anxious to see what microsoft has in store, but i'm not excited. the recent post here by the developer whose system credentials were changed after he linked his microsoft account is part of the reason why. of course i'd want access to the microsoft store, but i don't want to log to the system with those credentials, i want to keep the ones that were already set. i doubt this will be the direction that threshold will take, and if it turns into another win8 turd i'll probably be done with the windows osedit: since i've been downvoted to oblivion i can only assume that the ms employees here like my post about as much as i like their winows 8 os |
why microsoft's engineering changes will be the real windows threshold story
| [disclaimer: i use windows 7, but i did use windows 8 for 2 weeks then decided to go back]i'm anxious to see what microsoft has in store, but i'm not excited. the recent post here by the developer whose system credentials were changed after he linked his microsoft account is part of the reason why. of course i'd want access to the microsoft store, but i don't want to log to the system with those credentials, i want to keep the ones that were already set. i doubt this will be the direction that threshold will take, and if it turns into another win8 turd i'll probably be done with the windows osedit: since i've been downvoted to oblivion i can only assume that the ms employees here like my post about as much as i like their winows 8 os | > i've heard microsoft built a new real-time telemetry system codenamed "asimov" (yes, another halo-influenced codename)[long, drawn-out sigh] no amount of head-shaking or facepalming will suffice here. |
common parts library
| more info about the common parts library is available here, <link> | this is great! a few things that might be nice to add are the atmega32u4 (on the arduino leonardo and micro, among other things), the attiny85, the attiny84, and these resonators: <link> hand-soldering, it might be nice to include 1206 packages in addition to 0603 ones, although i realize that would make the list much longer.another good reference for this kind of thing is the fab lab inventory: <link> and it might be worth looking that over to see if there's anything that seems worth adding. |
common parts library
| this is great! a few things that might be nice to add are the atmega32u4 (on the arduino leonardo and micro, among other things), the attiny85, the attiny84, and these resonators: <link> hand-soldering, it might be nice to include 1206 packages in addition to 0603 ones, although i realize that would make the list much longer.another good reference for this kind of thing is the fab lab inventory: <link> and it might be worth looking that over to see if there's anything that seems worth adding. | this is great. i am so glad this is getting done! i've spent way too much time clicking around the horrible distributor search engines, trying to determine which parts are cheap, readily available and will remain so (these three things usually go in hand). it is incredibly difficult and time-consuming if you are looking for something like a 12mhz smd crystal: good luck sifting through thousands of options.the current selection is very limited, but still useful for many projects, i will certainly make use of it.the logical next step would be a kicad (and possibly eagle?) library containing all the footprints. not just thrown in there, or auto-converted, but actually verified by a human. |
common parts library
| this is great. i am so glad this is getting done! i've spent way too much time clicking around the horrible distributor search engines, trying to determine which parts are cheap, readily available and will remain so (these three things usually go in hand). it is incredibly difficult and time-consuming if you are looking for something like a 12mhz smd crystal: good luck sifting through thousands of options.the current selection is very limited, but still useful for many projects, i will certainly make use of it.the logical next step would be a kicad (and possibly eagle?) library containing all the footprints. not just thrown in there, or auto-converted, but actually verified by a human. | to start, this is a nice idea and i'm happy to contribute a bit to it, time depending and output depending. i'll be looking for an altium library containing these parts and links in order to stay interested.the 2n7002 has always been my standby signal nmos. there are no power fets or igbt modules. be nice to include some of the ixys stuff.a hinge-type micro sd card socket would be a nice variation, something that's harder to jar loose.hirose make some pretty nice board-to-board connectors. all you have on there so far are yucky 100 mil thruhole headers. some finer pitch stuff would be nice. and pin pitch and number need to be a sortable/searchable field. some smb sockets would be awesome for test points, as would some test point headers (vector makes nice ones like the k24 series, but my buddies like the little ones with the plastic colored bushing and a ring on top).there are nowhere near enough microcontrollers. you could easily have 20 msp430s. i've had good luck with the msp430f2246 and f5438, i believe, but we've used a ton of different varieties.how about a 232 driver like the max232 family? or a 485/422 transceiver, or any kind of differential driver/receiver pair. those analog devices adum isolated transceivers are great parts.and no zeners! the bzx84c series are a nice family to start with. i want to gag over the opamp selection.i don't think the kinds of specs you offer are sufficient to describe the parts there. this could be said for just about everything on that list, which is probably the biggest issue with such a list. most parts that designers select are chosen for one of two reasons - we don't care and they're in the library, or they are the key part that makes everything else worth doing. in the first instance, this list is great. in the second, i'm going to spend a day looking at all the vendor options to pick the best part i can find. but even for the parts i don't really care about, i have some concerns - the part has to work right for the application. active parts are specified by many key parameters and in the case of opamps in particular these parameters are not indicated at all here, so i'll end up having to look up each part's details anyway. consider input bias current, offset voltage, 0.1-10 hz noise, 10hz-1khz integrated noise, just as a start.rant off. nice idea, here's my two cents worth. |
common parts library
| to start, this is a nice idea and i'm happy to contribute a bit to it, time depending and output depending. i'll be looking for an altium library containing these parts and links in order to stay interested.the 2n7002 has always been my standby signal nmos. there are no power fets or igbt modules. be nice to include some of the ixys stuff.a hinge-type micro sd card socket would be a nice variation, something that's harder to jar loose.hirose make some pretty nice board-to-board connectors. all you have on there so far are yucky 100 mil thruhole headers. some finer pitch stuff would be nice. and pin pitch and number need to be a sortable/searchable field. some smb sockets would be awesome for test points, as would some test point headers (vector makes nice ones like the k24 series, but my buddies like the little ones with the plastic colored bushing and a ring on top).there are nowhere near enough microcontrollers. you could easily have 20 msp430s. i've had good luck with the msp430f2246 and f5438, i believe, but we've used a ton of different varieties.how about a 232 driver like the max232 family? or a 485/422 transceiver, or any kind of differential driver/receiver pair. those analog devices adum isolated transceivers are great parts.and no zeners! the bzx84c series are a nice family to start with. i want to gag over the opamp selection.i don't think the kinds of specs you offer are sufficient to describe the parts there. this could be said for just about everything on that list, which is probably the biggest issue with such a list. most parts that designers select are chosen for one of two reasons - we don't care and they're in the library, or they are the key part that makes everything else worth doing. in the first instance, this list is great. in the second, i'm going to spend a day looking at all the vendor options to pick the best part i can find. but even for the parts i don't really care about, i have some concerns - the part has to work right for the application. active parts are specified by many key parameters and in the case of opamps in particular these parameters are not indicated at all here, so i'll end up having to look up each part's details anyway. consider input bias current, offset voltage, 0.1-10 hz noise, 10hz-1khz integrated noise, just as a start.rant off. nice idea, here's my two cents worth. | ah, funny they mention the open parts library-- we bought two for stock before figuring out that it's really a dfm kinda thing, which doesn't fit with the hobbyist customer segment at all. if anybody wants to buy one from a us-based distributor, you can certainly take them off our hands: <link> |
shocktrooper: mass server patching for shellshock
| shameless plug: <link> provides a great way to run commands on groups of servers via ssh and a web interface for patching shellshock. we also store the result of stdout and stderr and who executed the commands for a complete audit trail.see the following tweet: <link> | ansible main -a "sudo apt-get update; apt-get install --upgrade-only bash" |
shocktrooper: mass server patching for shellshock
| ansible main -a "sudo apt-get update; apt-get install --upgrade-only bash" | so... instead of connecting to all my servers securely and 'yum update bash'ing i can download this script that i don't trust, configure it with all my super secret passwords and let it run riot. |
shocktrooper: mass server patching for shellshock
| so... instead of connecting to all my servers securely and 'yum update bash'ing i can download this script that i don't trust, configure it with all my super secret passwords and let it run riot. | i gotta say, if this is what you have to resort to for one single security advisory, i'm scared to think how the remaining ~weekly advisories are handled. |
shocktrooper: mass server patching for shellshock
| i gotta say, if this is what you have to resort to for one single security advisory, i'm scared to think how the remaining ~weekly advisories are handled. | i don't really understand the point of this. aren't there already simple tools that take a list of server credentials and run the same command on all of them? (i could understand if it was made for fun but the faq says it's "out of necessity" and patching multiple distros can be a "nightmare". how? just attempt to execute apt and yum everywhere.)though maybe i'm just disappointed that it doesn't log in via shellshock as i hoped from the title. |
show hn: moo.do – simple, powerful organizational tool
| i would just kill for this to be a local and native application. this is literally what i've been collecting myself to build. a note-taking app that automatically generates a timeline/agenda. i might just use this, but i never stick to web based interfaces like this. | i just started using this and i'm already a complete convert! i've been using google keep, any.do, and google calendar to keep track of slightly different things since no one app fit all my needs. but moo.do actually seems flexible enough to handle everything i use those 3 apps for!i've only been using it for a couple hours but i've already transferred everything i have from my other apps to it and i'm already fluent in using all the shortcuts. i also really like the flexibility you get from being able to add any number of panes emacs-style. i'm able to have a normal pane open focused on work stuff, a timeline pane open filtered for @today, and another normal pane open to capture random thoughts and to-dos i want to jot down. it's already made me insanely productive.one nitpick i have is that i wish that searching on certain dates would also pick up equivalent references to that date. for example, i've entered some tasks as @wednesday but other tasks as @october1. it would be awesome if i were able to search on @wednesday and also pick up the tasks tagged @october1. also having recurring tasks would be awesome too. |
show hn: moo.do – simple, powerful organizational tool
| i just started using this and i'm already a complete convert! i've been using google keep, any.do, and google calendar to keep track of slightly different things since no one app fit all my needs. but moo.do actually seems flexible enough to handle everything i use those 3 apps for!i've only been using it for a couple hours but i've already transferred everything i have from my other apps to it and i'm already fluent in using all the shortcuts. i also really like the flexibility you get from being able to add any number of panes emacs-style. i'm able to have a normal pane open focused on work stuff, a timeline pane open filtered for @today, and another normal pane open to capture random thoughts and to-dos i want to jot down. it's already made me insanely productive.one nitpick i have is that i wish that searching on certain dates would also pick up equivalent references to that date. for example, i've entered some tasks as @wednesday but other tasks as @october1. it would be awesome if i were able to search on @wednesday and also pick up the tasks tagged @october1. also having recurring tasks would be awesome too. | i know this is a pretty open/flexble tool — but from looking at the examples and trying out the web/app i have a few questions:- what is the intended delineation between a document and a top-level header?- how are notifications in the app (ios) incorporated. do they notify based on "@date time" of item?- how might this be used as a notepad. it seems like a big aspect of it is the crossing-off of items?- does @tomorrow turn into @today in the document when a day has passed. same w/ @today to @yesterday etc?otherwise, this app has really captured my interest.i'm a bit overwhelmed by the interface though — coming from a simple list / to-do app where there aren't hierarchal levels displayed inline... i think the search/filter will definitely help with this but i may have to get used to it.edit: one more thought — i would like to be able to use the +person tagging but do not want to use google contacts (or device contacts for that matter, which isnt possible). i know i can use #name but would prefer the look of the +person as designed. (along the same lines, i wouldn't minde decoupling the app from google at some point...) |
show hn: moo.do – simple, powerful organizational tool
| i know this is a pretty open/flexble tool — but from looking at the examples and trying out the web/app i have a few questions:- what is the intended delineation between a document and a top-level header?- how are notifications in the app (ios) incorporated. do they notify based on "@date time" of item?- how might this be used as a notepad. it seems like a big aspect of it is the crossing-off of items?- does @tomorrow turn into @today in the document when a day has passed. same w/ @today to @yesterday etc?otherwise, this app has really captured my interest.i'm a bit overwhelmed by the interface though — coming from a simple list / to-do app where there aren't hierarchal levels displayed inline... i think the search/filter will definitely help with this but i may have to get used to it.edit: one more thought — i would like to be able to use the +person tagging but do not want to use google contacts (or device contacts for that matter, which isnt possible). i know i can use #name but would prefer the look of the +person as designed. (along the same lines, i wouldn't minde decoupling the app from google at some point...) | this looks amazing, but unfortunately is missing some core features i need for my workflow.- import via an open api - i have many inputs, including email, kanban boards, bug trackers etc - i want to write my own integrations.- defer dates - i have a lot of stuff, i do not want visibility of stuff until i can actually action it.- reviews - this is critical to handling large quantities of todo items, regular reviews is a must, i want to be able to tag items/headers with a review schedule.- recurrence - i do things once a week, i need to be able to schedule this. alternatively integration with google calendar so it can trigger recurring items. |
show hn: moo.do – simple, powerful organizational tool
| this looks amazing, but unfortunately is missing some core features i need for my workflow.- import via an open api - i have many inputs, including email, kanban boards, bug trackers etc - i want to write my own integrations.- defer dates - i have a lot of stuff, i do not want visibility of stuff until i can actually action it.- reviews - this is critical to handling large quantities of todo items, regular reviews is a must, i want to be able to tag items/headers with a review schedule.- recurrence - i do things once a week, i need to be able to schedule this. alternatively integration with google calendar so it can trigger recurring items. | what kind of import and export capabilities does it have? it is important that i don't lose my data due to vendor lock-in. |
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