I've seen a few posts on the topic of "How to Increase Your Reputation" (e.g.  ), which say that editing is an important reputation-affecting factor, for example:     For users who don't have a lot of experience in programming and rarely answer questions, try editing posts.   However, I can't find any detail on that. I see that we get 2 reputation points when a suggested edit is "accepted" (approved), but I have some question apart of that:   Does the +2 rep apply to any edit that I do to someone else's question, answer, or comment? Does editing (or deleting) my own questions/answers/comments affect my reputation? In terms of reputation, why is it important to "Edit, But Don’t Edit Too Much"?  As far as I know the only action of mine that can readily reduce my reputation is down-voting someone else's question/answer/comment...?

On Stack Exchange, users may gain a certain level of reputation.  What does reputation do? How can a user gain or lose reputation?   See also   in the Help Center  - Maximum amount of votes a user can use in a day and reputation requirements to vote.  - How to get an exact overview of the actions that got you your reputation.  - A full list of all privileges granted at each reputation level on all sites.


From   tmp=${string//"$separator"/$'\2'}    What does $ in $'\2' mean?   Is $'\2' a parameter expansion?  Thanks.

I just saw this in an init script: echo $"Stopping Apache"  What is that dollar-sign for? My research so far: I found this in the bash manual:  extquote  If set, $'string' and $"string" quoting is performed within ${parameter} expansions enclosed in double quotes.  This option is enabled by default.   ...but I'm not finding any difference between strings with and without the $ prefix: $ echo "I am in $PWD" I am in /var/shared/home/southworth/qed $ echo $"I am in $PWD" I am in /var/shared/home/southworth/qed $ echo $"I am in ${PWD}" I am in /var/shared/home/southworth/qed $ echo "I am in ${PWD}" I am in /var/shared/home/southworth/qed $ echo 'I am in ${PWD}' I am in ${PWD} $ echo $'I am in ${PWD}' I am in ${PWD} $ echo $'I am in $PWD' I am in $PWD


I have table in database which stores few queries, Using sqlcmd I am trying to retrieve the queries. While doing so, the select * from abc is getting replaced with 'select  from abc'  How to overcome this issue?  Edit:  Max_Values=5 n=1 while [ $n -le $Max_Values ] do Sql_Qry="set nocount on;Select Query from dbo.abc With(nolock) Where RowID=$n"    Query=`/opt/mssql-tools/bin/sqlcmd -S Server_name -U UserID -P Password -d database -Q "$Sql_Qry" -h -1` echo $Query n=$(( n+1 )) done   Expected Output:   Select * from Int.Table1   Actual Output:   Select Script1.txt script2.sh script3.sh from Int.Table1   The script1, script2 and script3 are files within the current directory

Or, an introductory guide to robust filename handling and other string passing in shell scripts.  I wrote a shell script which works well most of the time. But it chokes on some inputs (e.g. on some file names).  I encountered a problem such as the following:   I have a file name containing a space hello world, and it was treated as two separate files hello and world. I have an input line with two consecutive spaces and they shrank to one in the input. Leading and trailing whitespace disappears from input lines. Sometimes, when the input contains one of the characters \[*?, they are replaced by some text which is is actually the name of files. There is an apostrophe ' (or a double quote ") in the input and things got weird after that point. There is a backslash in the input (or: I am using Cygwin and some of my file names have Windows-style \ separators).   What is going on and how do I fix it?


I am trying to understand differences in using past simple and present perfect. Let consider following examples.     I have put onion in the soup.   I am cooking the soup now, onion is floating in water, we use perfect because we can see result now.     I put onion in the soup and I closed the pan with a lid.   There is story about actions, we use past simple. The words below are from one song:     I have climbed the highest mountains   I have run through the fields   Only to be with you.   This is report on the actions, and actions do not bound with each other. We use perfect.  Let consider next sentences.     I have made the soup. I have cleaned up my home.   It looks like report on actions, we use perfect.  But if we want to say that I first made the soup, and then did the house cleaning?     I made the soup, then I cleaned up my home (???)   How to distinguish fine line between reporting on unrelated actions and actions in the story?  EDITED ##########################################################  Thanks for reply. When I used first example, I wanted to say something in following context:   - What have you done this morning? - I have made soup. (You can eat it now)       Present perfect, I want to point to result by now. We can use past simple, but perfect can be used too.   But if I made a sequence of actions, I can say:     I bought vegetables, washed it, sliced it, cook it. Thus I made soup.   This is story about sequence of actions, I cannot use present perfect.  Let consider another song   Oh, where have you been, my darling young one? I’ve stumbled on the side of twelve misty mountains I’ve walked and I’ve crawled on six crooked highways I’ve stepped in the middle of seven sad forests I’ve been out in front of a dozen dead oceans  Read more: http://www.bobdylan.com/us/songs/hard-rains-gonna-fall    We have report of performed action by reporting period (sorry for tautology). My book tells me that present perfect is good for this context, because this is not story about sequence of actions, and we can use present perfect.    As I understand now, difference between story (past simple) and report (present perfect) may depends on context and what I want underscore it sentences. We can say      "I have lost my key and painted door to red colour this   morning".   (= you can see red door and that I cannot ride car now.)  But I can rephrase it to      "I lost my key, tried to find it, but failed. Then I remembered about   pale door and paited it to red colour."   It looks like story about sequense of actions, and we cannot use present perfect.  Correct me if I'm wrong.

If I seem tired, can I say: "I haven't slept last night"? If not, why have I been told that we use present perfect for actions that have present effects?


so I recently had some lessons in induction and I feel pretty comfortable with it, but there is just this one exercise that I for some reason can't figure out.  I got this so far:  $1^3 + 2^3 + 3^3 + .... + n^3 = \frac{n^4}{4} + \frac{n^3}{2} + \frac{n^2}{4}$ is what I need to proof, I already did the $n = 1$ and the induction hypothesis step but after that I'm stuck. I got the point where I used induction to replace the $n^3$ for the $\frac{n^4}{4} + \frac{n^3}{2} + \frac{n^2}{4}$ and made it all one big $\frac{p}{4}$ but I just can't get it to work.  If someone could help me out that would be great!

How can I prove that     $$1^3+ 2^3 + \cdots + n^3 = \left(\frac{n(n+1)}{2}\right)^2$$    for all $n \in \mathbb{N}$? I am looking for a proof using mathematical induction.  Thanks


I have an external Hard Drive and from time to time a random folder named something like 2eca741dd6d1f17e12bd34da6e546f appears. I delete it and some days/weeks later it appears again.   The folder contains a file named MpMiniSigStub.exe  What is it?   When I try to delete it, I have to delete it as an administrator. Also, the name isn't the same every time.

I have a Windows XP Professional SP 3. In my C drive, I have a lot of folders which I do not know why they exist. Sample these names -    1da9de11ed14f5da3b6ace4e25f5 a0332ef3abcaf03e49   What are they? Why are they created? Can I delete them?


Let $f: (0, \infty)\to R$ be  continuous such that  $f(x)\leq f(nx)$ for all positive $x$ and natural $n$.  I'd like to prove  $\lim\limits_{x\to\infty} f(x)$ exists finite or infinite   but I'm not quite sure how to persou this way  Any piece of advice would be much appreciated

Let $f\colon(0,\infty)\to \mathbb R$ be a continuous function such that $f(x)\le f(nx) , \forall n \in \mathbb N , \forall x >0$ , then is it true that $\lim_{x\to \infty} f(x)$ exists (may be infinite) ?


In a campaign I am starting I want to make use of an encounter where the players could lose a device that will make it easier for them to pass a puzzle later on. The idea is the following:  In order to reach a set of caves the players must cross an alpine lake by boat. On their way, they find themselves in a storm. The storm will do a certain amount of damage each turn. The boat will also be attacked by some Merfolk. The idea is that when the players kill the Merfolk, the storm dissipates. If they fail to do so before the boat is destroyed, the Merfolk let them be, and the players must swim to shore. This means they will lose the heavy stone artifact.   I want the encounter to be such that the players have a reasonable chance of beating the Merfolk before the boat is destroyed, but there should also be a good chance of them not making it. In order to do so, I have to have an idea about the number of turns it will likely take, such that I have an idea as to how much HP the boat should have (or alternatively, how much damage die the storm should roll every round), for there to be a good possibility of both.  How would one get an idea about the number of rounds? Are there any tricks/methods that give you an idea of this?

I am trying to create a simple way to track ammunition for my upcoming sandbox game. In this system, players will buy ammunition in (for lack of a better word) "packets". One packet of ammunition contains enough for one encounter. To work out the price of a packet, all I need to do is multiply the cost of one arrow (or bolt, etc.) with the number of arrows fired in the average combat encounter. I understand that number of arrows used will double when extra attack is gained. I can work around that easily by making players with extra attack spend two packets per encounter.  (Why bother with ammunition at all if I'm going to simplify it this much? Because I also have a simplified encumbrance system, so this ties into that. Players have to decide how many fights' worth of ammunition they are willing to carry.)  However, to be able to work this out, I need to know how long the average encounter is. When I say "average", I mean a medium or hard difficulty encounter in which 4–6 characters face off against a similar number of opponents. In other words, what might be considered the bog-standard, run-of-the-mill encounter.  I would be particularly interested to hear from someone who has been recording the length of each encounter (as unlikely as that may be).


I need to prove that $R$ is commutative, that is for each $x,y\in R$ $xy=yx$. I think for a ring to be commutative, it needs identity such that $1_R\cdot x=x=x\cdot 1_R$, $1_R\not=0_R$.  so,   $xy=1_R(xy)=1_Rx\cdot 1_Ry=1_Ry\cdot 1_Rx=(yx)1_R=yx$ Dose it make sense? ----Ok does not make sense!

A ring $R$ is a Boolean ring provided that $a^2=a$ for every $a \in R$. How can we show that every Boolean ring is commutative?


I am looking for a reliable choice.  How to install Python 3.4.3 on Ubuntu 14.04 LTS without building from source?

How can I install a different version of Python using apt-get?  Obviously I realise I can install using the source tar ball, however I would prefer not to install from source and instead use the package manager, as that's what it's there for. Surely somewhere reputable builds .deb files for the latest Python releases (why python.org don't is beyond me) that I can reference.   What do I need to do to reference them and what issues might it create when upgrading to the next version?  If there is no way except for building from source, is there a (pseudo) package that I can can install that will provide all of the dependencies needed without having to find and install each individually? So that I don't get:  The necessary bits to build these optional modules were not found: _bz2                  _curses               _curses_panel       _dbm                  _gdbm                 _lzma               _sqlite3              _ssl                  _tkinter            readline              zlib


I have some installation  but they use pathmunge which caused me an error in Ubuntu. What is the equivalent syntax to the following script to do the same in Ubuntu?  /etc/profile.d/openssl.sh pathmunge /usr/local/openssl/bin   I did add pathmunge command to Ubuntu using this answer:  run nano ~/.bashrc && source ~/.bashrc and paste this:  pathmunge () {         if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then            if [ "$2" = "after" ] ; then               PATH=$PATH:$1            else               PATH=$1:$PATH            fi         fi }   When I login, I get this error:

How do I add a directory to the $PATH in Ubuntu and make the changes permanent?


I've created a table that contains several rows with input fields. In the last 'td' of my second to last 'tr', I've added two divs that control adding or removing a table row. Take a look at my (very basic) code.

Name	Job	Time

<input id="name"/>	<input id="job"/>	<input id="time"/>
+

   Pretty simple right? Using jQuery I added an onClick event on the 'addPerson' div inside my table. Here's my (again very basic) code:  $("#addPerson").on('click', function(){     //append a new row });   Appending the new row works, a new row is added before my last row ('calcRow') and is almost identical to the second to last row. The only thing different is that the new second to last row has a second div ('removePerson') next to the already existing div ('addPerson') and the 'addPerson' div from my old second to last row is removed.  Now to my problem, when I click on the 'addPerson' or 'removePerson' nothing happens! I've created a fiddle to show the issue:    I've tried '.live' and '.click' instead of '.on', but nothing worked so far. Do I have to bind the event in some way, or is my code just faulty?

I have a bit of code where I am looping through all the select boxes on a page and binding a .hover event to them to do a bit of twiddling with their width on mouse on/off.  This happens on page ready and works just fine.  The problem I have is that any select boxes I add via Ajax or DOM after the initial loop won't have the event bound.  I have found this plugin (), but before I add another 5k to my pages with a plugin, I want to see if anyone knows a way to do this, either with jQuery directly or by another option.


since Tex Live 2015 was released these days, I updated it. I´m using a Mac.  Now I wanted to check for package updates in the Tex Live Utility. But that does not work, unfortunately. First strange thing is that I have to choose the repository address by hand. Normally, this worked automatically. But even if I do so and choose an address, Tex Live Utility would show the following error message:  "The repository at  has TeX Live 2015, but you have TeX Live 18446744073709551615 installed.  You need to switch repositories in order to continue."  And there is also an error message regarding an "internal error".   Does anyone know what I have to do to get this working again? I guess it has something to do with updating to Tex Live 2015?  Thanks very much in advance.

I have the following strange message.  The repository at ftp://ftp.oleane.net/pub/CTAN/systems/texlive/tlnet  has TeX Live 2015, but you have TeX Live 18446744073709551615  installed. You need to switch repositories in order to continue.   How can I fix this ?


Is there a way to install apps in ubuntu 12.04? What I am looking for is something like an *.msi file for windows. If there isn't, then is there a way to enable all software resources so that you could just install an app by clicking on the install button in the SC? I am not concerned about viruses, as I can just wipe the partition and re install ubuntu, no personal files are stored on the computer.

How can I install applications like Google Chrome on Ubuntu?  Are there any commands to install an application?    Index of answers:


I learned that friction comes from the tiny crashes between the small bumps of uneven surface of each object. And I could make a rough guess about why heat is produced when two objects are rubbed together. Since friction is made by bumps(?) on the surface, the force you push downward(vertical to the surface),and the friction seems like it does not have to satisfy the linear equation such as  $$F= μN$$  For conclusion, is the explanation of friction using the bumps right? And if it is, in what specific structure of the surface can they satisfy a tendency of linear equation even though the linear equation is just a simple mathematical concept?

The general equation for the force of friction (static or kinetic) is $F_f = \mu * F_N$, where $F_f$ is the force of friction and $\mu$ is the coefficient of friction (its value is dependent upon the surfaces interacting on each other).  Why is it that this equation is so simple and does not contain any other variables that account for the force of friction on an object? Does anyone know how this equation was developed?


I have added a new field to the user profile on my site (i.e. in /admin/config/people/accounts/fields), a boolean value that can be either 0 or 1. Existing users have no value. How can I easily set a value for all existing users?

I added a new (text) field to a Drupal 7 content type that already has many nodes.   How can I fill the field with a default value for all these nodes?


What is the difference between echo hello > a.txt and echo hello >> a.txt. It is doing the same thing, why should we use >> instead of >? And what does < do?

I often see tutorials online that connect various commands with different symbols. For example:  command1 |  command2 command1 &  command2 command1 || command2     command1 && command2   Others seem to be connecting commands to files:  command1  > file1 command1  >> file1   What are these things? What are they called? What do they do? Are there more of them?    .


I am trying to find a way to make global color changes in a single place.  I found another question that describes this well... .  Per the answers to that post/question, Photoshop CS5 does not support "global swatches".  So, my new question is...  Are there any plugins for Photoshop CS5 that enable "global swatch" type functionality or in some other way achieve the objective outlined in the question linked above?

I'm looking for a way to use one color in multiple different layers, and then be able to change that color in all the layers in one single place.  Lets say that I have four layers using #ffffff. Now I want to know what my design looks like with #ffff00 instead. How can I do this without manually changing all four layers?  I can add that adjustment layer on hue/saturation is not really what I'm looking for. What I need is something like "change all #ffffff to #ffff00."


I am trying to call login API using Retrofit2.  But in onResponse i alwasy get null as response.  Login API endpoint  @FormUrlEncoded  @POST("/api/login/{mobile}")  Call<ResObj> userLogin( @Field("phoneNumber") String mobile );   And the API implementation   private void doLogin(final String mobile){         Call<ResObj> call = userService.login(mobile);         call.enqueue(new Callback<ResObj>() {             @Override             public void onResponse(Call<ResObj> call, Response<ResObj> response) {                      ResObj resObj = response.body(); // here i am getting null response.body()                      if(resObj.getMessage().equals("true")){                          Intent intent = new Intent(Login.this, ListActivity.class);                         intent.putExtra("mobile", mobile);                         startActivity(intent);                      } else{                         Toast.makeText(Login.this, "Phone Number is incorrect!", Toast.LENGTH_SHORT).show();                      }                 }              @Override             public void onFailure(Call<ResObj> call, Throwable t) {                 Toast.makeText(Login.this, t.getMessage(), Toast.LENGTH_SHORT).show();             }         });      }   ResObj class:  public class ResObj {     private String message;      public String getMessage() {         return message;     }      public void setMessage(String message) {         this.message = message;     } }   I just want to  know what causes the error and what are possible solutions.  UPDATE  POSTMAN

What are Null Pointer Exceptions (java.lang.NullPointerException) and what causes them?  What methods/tools can be used to determine the cause so that you stop the exception from causing the program to terminate prematurely?


Python 3.7 Why this: a,b,c = [], [], [] print(a is b, b is c)  is different than this: a,b,c = ([],) * 3 print(a is b, b is c)

I needed to create a list of lists in Python, so I typed the following: my_list = [[1] * 4] * 3  The list looked like this: [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]]    Then I changed one of the innermost values: my_list[0][0] = 5  Now my list looks like this: [[5, 1, 1, 1], [5, 1, 1, 1], [5, 1, 1, 1]]    which is not what I wanted or expected. Can someone please explain what's going on, and how to get around it?


Let's say I have 200 employees with a mean wage of 34 dollars and standard deviation 17 dollars, with maximum wage \$89 and minimum wage \$13.   How do I describe the standard deviation in words in term of the wage?

What is a standard deviation, how is it calculated and what is its use in statistics?


There's been a debate on a D&D discord server that's caused me a lot of trouble. Here is the question: if a wizard 2/cleric 2 has a wizard spell prepared from being a cleric, rather than from being a wizard, then should the wizard-cleric not be able to then scribe that spell into their spellbook the same as if they had it prepared from anywhere else?   Edit: This is different to the bard/wizard question due to bards having spells known, and clerics preparing spells just as wizards do.

I'm multiclassing as a Wizard2/Cleric3. I'm wondering if it's possible to prepare a spell from the cleric spell list and then if it's also found in the Wizard spell list, would I be able to write it down in my wizard spellbook? I'm confused by this as the PHB states that if I find a scroll or a book, I can decipher it and boom, it's in my own book. I'm essentially my own walking book book. I've found this in the sidebar in the PHB under wizard regarding spellbooks.  Replacing the Book. You can copy a spell form your own spellbook into another book-for example, if you want too make a backup copy of your spellbook. This is just like copying a new spell into your spellbook, but faster and easier since you understand your own notation and already know how to cast the spell. You spend only 1 hour and 10gp for each level of the copied spell. If you lose your spellbook, you can use the same procedure to transcribe the spells that you have prepared into a new spellbook. Filling out the remainder of yourspellbook requires you to find new spells to do so, as normal. For this reason, many wizards keep backup spellbooks in a safe place.  Now, lets say that I prepare Protection from Evil and Good, which is a 1st level spell and can both be found in the Cleric spells list and in the Wizard spell list. Shouldn't it be possible for me to write it down into my spellbook by following the given formula in the "Replacing the Book"; 10gp + 1hour for each level of the copied spell. I understand that it  would have been very different if the holder of the spell I want to copy is another creature (party member or not) but now it's all me. I know the spells, I own the book, I am the Wizard.


If I right-click a folder from the desktop I do not see "Compress" nor do I see "Extract" or "Extract to" when right-clicking a zip on the desktop. However if I view those folders/files in then file manager then right-clicking shows the usual compress/extract options in the menu.

In Ubuntu 20.04, on the desktop, there is a number of actions I wish I could do, such as, by order of importance :  use keyboard shortcuts such as select all, copy / paste. use drag & drop with icons deactivate the "mouse over" highlight, and restrict the clicking area to only the icon, not the surrounding square  To put it simply, I'd like to have the exact same features as offered by the desktop of Ubuntu 18.04 (probably related to a specific version of GNOME, and not Ubuntu itself). Am I missing something obvious here? I actually see no reason why those actions are removed or deactivated on the desktop, since they all work in any Nautilus window.


I am trying to add conditional formatting that turns yellow after 48 hours from the date in the cell, turns orange after 72 hours from the date in the cell, and red after 96 hours after the date in the cell.

I have set up a Google spreadsheet for managing projects and due dates, and I need to apply the following formatting to a column of dates, but I'm not sure how:   Dates more than 7 days from today: Black   Dates less than or equal to 7 days from today: Green   Dates before today (late projects): Red   , but this doesn't actually do what it needs to do. It turns dates that are only 1 week LATE orange. It does not change dates that are one week AWAY orange. So this isn't working... unless I'm missing something.


What is $\int \sin^4x$?  I tried to use the identity $\sin^2x = \frac{1-\cos 2x}{2}$, but I'm stuck.

I am working on trying to solve this problem:     Prove: $\int \sin^n{x} \ dx = -\frac{1}{n} \cos{x} \cdot \sin^{n - 1}{x} + \frac{n - 1}{n} \int \sin^{n - 2}{x} \ dx$   Here are the steps that I follow in the example that I am reading:     $u = \sin^{n - 1}{x}$      $du = (n - 1) \cdot \sin^{n - 2}{x} \cdot \cos{x} \ dx$      $v = -\cos{x}$      $dv = \sin{x} \ dx$            $\int \sin^n{x} \ dx =  \sin^{n - 1}{x} \cdot \sin{x} \ dx$      $\int \sin^n{x} \ dx = \underbrace{\sin^{n - 1}{x}}_{u} \cdot \underbrace{-\cos{x}}_{v} - \int \underbrace{-\cos{x}}_{v} \cdot \underbrace{(n - 1) \cdot \sin^{n - 2}{x} \cdot \cos{x} \ dx}_{du}$      $\int \sin^n{x} \ dx = -\cos{x} \cdot \sin^{n - 1}{x} + (n - 1)\int \sin^{n - 2}{x} \cdot \cos^{2}{x} \ dx$      $\int \sin^n{x} \ dx = -\cos{x} \cdot \sin^{n - 1}{x} + (n - 1)\int \sin^{n - 2}{x} \cdot \left(1 - \sin^{2}{x}\right) \ dx$   Here is where I get lost. How did we go from $\int \sin^{n - 2}{x} \cdot \left(1 - \sin^{2}{x}\right) \ dx$ to $\int \sin^{n - 2}{x} \ dx - (n - 1) \int \sin^{n}{x} \ dx$? Even more specifically, where did $\sin^{n}{x}$ come from?     $\int \sin^n{x} \ dx = -\cos{x} \cdot \sin^{n - 1}{x} + (n - 1)\int \sin^{n - 2}{x} \ dx - (n - 1) \int \sin^{n}{x} \ dx$   I get this part.     $n\int \sin^n{x} \ dx = -\cos{x} \cdot \sin^{n - 1}{x} + (n - 1)\int \sin^{n - 2}{x} \ dx$      $\int \sin^n{x} \ dx = -\frac{1}{n} \cos{x} \cdot x \ \sin^{n - 1}{x} + \frac{n - 1}{n} \int \sin^{n - 2}{x} \ dx$   Could someone please explain what I am missing?  Thank you for your time.


I had created an PHP-Object for my Database, and now i have a question is it protected from SQL-Injections??? Here my method to load Data form Database  public function loadData($query, $params = []) { $stmt = $this->db->prepare($query); $stmt->execute($params); return $stmt->fetchAll(); }   My Query  $user_id = trim($_GET['user']); $article_id = trim($_GET['article']);  $data = loadData("SELECT * FROM articles WHERE user = ? AND article = ?", [$user_id, $article_id]);   or this solution.  $myData = [$user_id, $article_id];  $data = loadData("SELECT * FROM articles WHERE user = ? AND article = ?", $myData);

If user input is inserted without modification into an SQL query, then the application becomes vulnerable to , like in the following example:  $unsafe_variable = $_POST['user_input'];   mysql_query("INSERT INTO `table` (`column`) VALUES ('$unsafe_variable')");   That's because the user can input something like value'); DROP TABLE table;--, and the query becomes:  INSERT INTO `table` (`column`) VALUES('value'); DROP TABLE table;--')   What can be done to prevent this from happening?


If I install the Steam client onto my SSD, can I install games I download on Steam to my HDD?

I have a 1 TB HDD and a 120 GB SSD. On the HDD I have all my data along with Steam and—currently—all my games. On the SSD I have Windows 7 and programs, but there's 50 GB of unused space that I wish to use for the games I most commonly play on Steam (for quicker loading times, etc).  To summarize, I want to have this situation:   120GB SSD (C:\): Windows, programs, and a few Steam games. 1TB HDD (D:\): data, Steam, and most games.   Is this possible? If not, what other choices do I have to do something similar?


Having this problem since I updated to W10 from W7. The whole blender window appears zoomed in. See:    The window is minimized just for the screenshot  You can see on the edges the effect of the zoom. This is only solved by using Alt + F11  to turn it up to full screen, where there's no such zoom effect.  What is causing this and how can I solve it? I've tried compatibility modes, running as admin, reinstalling, and installing old versions. NOTHING solves this.  EDIT: I should also mention that it's only the display of the window that's zoomed, because technically the buttons and stuff are at the right place. You can see this with my mouse:    So it's only the appearance that is offset with the zoom effect.  PC Specs:  Pentium G4560 3.5ghz  8 GB DDR4 RAM  Intel HD 610

I have a problem with Blenders UI. The "Info" bar on top disappeared and the mouse pointer is misaligned. I reinstalled Blender 2 times, deleted every leftover files  but it still does the same thing. This is in v2.78c. The weird thing is that on the bottom everything works fine. Here are some images:


I bought a fully cooked can Hormel Ham. It is to be refrigerated however I left it in my trunk for 4 hours. It is now in my fridge. Should it be okay???

If I left food out of the refrigerator for some period of time, is it still safe? If I left it out too long, can I salvage it by cooking it more?


The following packages were automatically installed and are no longer required:   mingw-w64 sbsigntool libnet-ssleay-perl gir1.2-timezonemap-1.0 linux-image-3.5.0-22-generic realpath efibootmgr libunistring0 diffstat   libdmraid1.0.0.rc16 libdebconfclient0 binutils-mingw-w64-i686 libxml-parser-perl liburi-perl libhtml-parser-perl kpartx-boot libopts25   gir1.2-json-1.0 libhttp-daemon-perl linux-headers-3.5.0-22-generic autogen libfont-afm-perl libhttp-negotiate-perl libfile-listing-perl   libhtml-form-perl gcc-mingw-w64 user-setup gcc-mingw-w64-i686 kpartx libhtml-tree-perl libencode-locale-perl rdate libhttp-date-perl   libmailtools-perl liblwp-protocol-https-perl libhttp-cookies-perl libhttp-message-perl binutils-mingw-w64-x86-64 libdebian-installer4   libopts25-dev libnet-http-perl btrfs-tools apt-clone localechooser-data linux-headers-3.5.0-22 gcc-mingw-w64-base libhtml-format-perl   libgettextpo0 libsocket6-perl gcc-mingw-w64-x86-64 libhtml-tagset-perl archdetect-deb dmraid python-pyicu libkms1 libwww-perl mingw-w64-dev   libio-socket-ssl-perl libwww-robotrules-perl liblwp-mediatypes-perl gir1.2-xkl-1.0 libio-socket-inet6-perl Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. dianne@dianne-Inspiron-3437:~$ sudo do-release-upgrade Checking for a new Ubuntu release No new release found

Recently I have installed an older version of Ubuntu on my old machine. Whenever I try to install any software, I get an error saying it couldn't be found:  $ sudo apt-get install vlc Reading package lists... Done                Building dependency tree        Reading state information... Done     E: Couldn't find package vlc


I'm stuck for a few days in the following problem:   If $GCD(a,b)=1$, then $GCD((a+b)^m , (a-b)^m )$ is at most $2^m$.   Can you give me a hint?

The problem is to prove the following   If $\gcd(a,b) = c$, then $\gcd(a^m, b^m) = c^m$    I know that this can be solved easily by proving that $c\mid a \implies c^m \mid a^m$ and $c\mid b \implies c^m \mid b^m$. So the greatest common divisor of $a^m$ and $b^m$ is $c^m$. But the problem is that I want to use Bézout's Lemma (Identity) to prove this.  I first introduce the following notation:  $$a = ca' \quad \quad b = cb', \quad \quad \text{where $(a',b') = 1$.}$$  Now from Bézout's Lemma, becaus $a'$ and $b'$ are coprime integers then we have integer solutions for the following equation:  $$a'x + b'y = 1$$  It's obvious that also the following equation has an integer solution:  $$a'^mx_1 + b'^my_1 = 1$$  Although I'm not able to prove this using Bézout's Lemma.  Now multiply both sides by $c^m$ we get:  $$(a'c)^mx + (b'c)^my = c^m$$ $$a^mx + b^my = c^m$$  But Bézout's Lemma states that for given $c^m$ is the greatest common multiplier of $a^m$ and $b^m$ or it is a multiplier of it.  But how to prove that it's not a multiplier of the greatest common multiper, and in fact is the greatest common multiplier. Is it possible to solve this problem with Bézout's Lemma?


I don't get how to make a mask and use it properly. What I'd like know exactly is how to make a mask of a certain area of the footage, keep it tracked to the footage and make the mask layered in front of any 3d mesh.  Q: How do I create a proper mask to place any 3d object behind an element of my footage?

I'm trying to make a vfx scene where a mesh I created passes behind an object in real life/the video. I've tried to make a mask around the real object, but that makes all of the objects that are supposed to be in front of the real object also disappear. How would I put the mask into my 3d viewport so that anything behind it disappears/is covered by the video, but anything in front of it isn't. I've heard of id-masks, and think those may be able to help, but honestly I have no clue how to use them. (I'm sorry that is worded so poorly, I'm not sure how to go about this.)  **edit I'm rendering/compositing using cycles render. It would be hard to render the objects separately because what I'm trying to do is make a rubix cube shatter and launch the pieces everywhere using some simulations. Because only some of the pieces fall behind a chair or under a table, it would be hard to select all of those and render them separately because they are all part of the same simulation. Also they all start on top of the table then some move under.


What does the employment status scale graphic mean?  (source: )

I see this ad sometimes and I would like to know what the acronyms are.


Using that: $$ x^{n - 1} + x^{n - 2} + \cdots + x + 1 = \left(x - w\right)\left(x - w^{2}\right)\ldots\left(x - w^{n - 1}\right) $$  Prove that: $$ \sin\left(\pi \over n\right)\sin\left(2\pi \over n\right)\ldots \sin\left(\left[n-1\right]\pi \over n\right) = {n \over 2^{n - 1}} $$

Using $\text{n}^{\text{th}}$ root of unity  $$\large\left(e^{\frac{2ki\pi}{n}}\right)^{n} = 1$$  Prove that   $$\prod_{k=1}^{n-1}\sin\frac{k \pi}{n} = \frac{n}{2^{n-1}}$$


So I have a centos 7 server with 2 users.  User1 has the ~/.ssh/authorized_keys file with proper permissions and with externaluser's public key in it.  User2 has the ~/.ssh/authorized_keys file with proper permissions and with the same externaluser's public key in it.  Externaluser can ssh to User1 with no problems, however, he gets Permission denied (publickey,gssapi-keyex,gssapi-with-mic) error when trying to ssh to User2.  Why does this happen? It's literally the same public key, properly pasted into the authorized_keys file of each user, using the same method.

I'm working from the URL I found here:    My ssh client is Ubuntu 64 bit 11.10 desktop and my server is Centos 6.2 64 bit. I have followed the directions. I still get a password prompt on ssh.  I'm not sure what to do next.


When Lily gave her life for Harry she protected Harry and this is why Voldemort couldn't kill him. But what extra protection came about when Voldemort used Harry's blood to regain a body, and what protection still would have remained if any, if Voldemort had not used Harry's blood?

Lily Potter chose to die instead of sacrificing her son Harry to Voldemort. In doing so, protective enchantments were created that protected Harry and made him less vulnerable to Voldemort and Voldemort's attempts to kill Harry.   Yet, I don't understand how Lily's enchantments, when Voldemort stole Harry's blood in the graveyard scene in Goblet of Fire (chapter 33, The Death Eaters), were helpful to Voldemort at all.     ‘He took my blood,’ said Harry.   ‘Precisely!’ said Dumbledore. ‘He took your blood and rebuilt his living body with it! Your blood in his veins, Harry, Lily’s protection inside both of you! He tethered you to life while he lives!’   Deathly Hallows - page 568 - Bloomsbury - chapter 35, Kings Cross   Yet I wonder about the following canon information:    Lily's enchantment was contingent upon Petunia Dursley giving Harry a home, which Petunia     grudgingly did¹. It was the blood bond between Harry and Petunia, plus the fact that Petunia gave Harry a home, where he could return to once per year, that sealed Lily's   protective enchantments and made them strong. Voldemort was never granted a home at the Dursleys, and in fact never stepped foot into the Dursleys' home at any point in canon. Never having been given a home at the Dursleys, how, then, did Lily, Petunia, and Harry's blood bond exist within Voldemort? Or did it? If it did, would it be because ? Lily's enchantments broke the moment Harry turned 17 and could not protect Harry any more². According to the 's page on Voldemort, Voldemort was 69 years old when he stole Harry's blood. If Lily's enchantment broke for Harry at age 17, why would the enchantments work for Voldemort when he was 69? Dumbledore tells Harry in Order of the Phoenix that Voldemort would not possess Harry because the love that fills Harry -- Lily's love -- is a force that Voldemort detests so greatly that he cannot bear to come into contact with it³. Yet the love Lily infused into Harry runs in his veins; Voldemort took Harry's blood, the blood that is imbued with Lily's love. How can he bear to be in contact with the love given to Harry in his own veins?   Given this canon information, why did Lily's enchantments work for Voldemort?  ¹Half-Blood Prince - chapter 3, Will and Won't and Order of the Phoenix - chapter 37, The Lost Prophecy ²Half-Blood Prince - chapter 3, Will and Won't ³Order of the Phoenix - chapter 37, The Lost Prophecy


We have a Debian Squeeze server running a fairly standard LAMP stack (back in the days it was set up using the Perfect Server guide at Howtoforge, so we're using ISPConfig as our backend admin panel) which has been locked down pretty well with regards to MTA's (nothing installed, no postfix, no EXIM etc.) and with the php mail() function thoroughly disabled, port 25 firewalled.  We routinely get SPAM warnings from e.g. MegaRBL however identifying our server IP as the source  Usually we track down a hacked Wordpress site, where we see a bunch of encrypted/obfuscated scripts and other junk, which we then nuke and hope for the best.  This approach is not satisfying to me as I am going mad with trying to figure out HOW they manage to send out SPAM from this server. I am guessing (and this might be totally wrong) that the scripts they manage to drop into the hacked Wordpress sites are Mail Transport Agents themselves. I obviously cannot gain much insight into what they are doing exactly as these scripts are encrypted / obfuscated.  All my google searches and research always points to Postfix or the mail() function and various guides on how to track this down and mitigate spam from these sources - but I am certain that all that stuff has been nuked from our server.  So my question here is threefold:   Is it possible that these obfuscated scripts we find are in fact sending out mail without the aid of any binaries installed on my server? (e.g. Postfix, sendmail, whatever) Is there any way of logging / detecting this type of traffic being emitted from our server? Am I missing something? Postfix has been removed, I've doublechecked that the PHP mail() function is disabled, I've scoured the binaries looking for anything that might be mail related and nuked it, but I'm worried I might just be retarded and missing something obvious ...

This is a  about Server Security - Responding to Breach Events (Hacking)   See Also:                  Canonical Version I suspect that one or more of my servers is compromised by a hacker, virus, or other mechanism:   What are my first steps? When I arrive on site should I disconnect the server, preserve "evidence", are there other initial considerations? How do I go about getting services back online? How do I prevent the same thing from happening immediately again? Are there best practices or methodologies for learning from this incident? If I wanted to put a Incident Response Plan together, where would I start? Should this be part of my Disaster Recovery or Business Continuity Planning?   Original Version       2011.01.02 - I'm on my way into work at 9.30 p.m. on a Sunday because our server has been compromised somehow and was resulting in a    attack on our provider. The servers access to the Internet   has been shut down which means over 5-600 of our clients sites are now   down. Now this could be an FTP hack, or some weakness in code   somewhere. I'm not sure till I get there.      How can I track this down quickly? We're in for a whole lot of   litigation if I don't get the server back up ASAP. Any help is   appreciated. We are running Open SUSE 11.0.            2011.01.03 - Thanks to everyone for your help. Luckily I WASN'T the only person responsible for this server, just the nearest. We managed   to resolve this problem, although it may not apply to many others in a   different situation. I'll detail what we did.      We unplugged the server from the net. It was performing (attempting to   perform) a Denial Of Service attack on another server in Indonesia,   and the guilty party was also based there.      We firstly tried to identify where on the server this was coming from,   considering we have over 500 sites on the server, we expected to be   moonlighting for some time. However, with SSH access still, we ran a   command to find all files edited or created in the time the attacks   started. Luckily, the offending file was created over the winter   holidays which meant that not many other files were created on the   server at that time.      We were then able to identify the offending file which was inside the   uploaded images folder within a  website.      After a short cigarette break we concluded that, due to the files   location, it must have been uploaded via a file upload facility that   was inadequetly secured. After some googling, we found that there was   a security vulnerability that allowed files to be uploaded, within the   ZenCart admin panel, for a picture for a record company. (The section   that it never really even used), posting this form just uploaded any   file, it did not check the extension of the file, and didn't even   check to see if the user was logged in.      This meant that any files could be uploaded, including a PHP file for   the attack. We secured the vulnerability with ZenCart on the infected   site, and removed the offending files.      The job was done, and I was home for 2 a.m.            The Moral   - Always apply security patches for ZenCart, or any other CMS system for that matter. As when security updates are released, the whole   world is made aware of the vulnerability.   - Always do backups, and backup your backups.   - Employ or arrange for someone that will be there in times like these. To prevent anyone from relying on a panicy post on Server   Fault.


The mobile site flag question popup gets blocked by the answer text view. Unable to view and select few options. This happens for a question with no answers or comments.   My device information   Browser: Google chrome 29.0.1547.72 Device: Galaxy Nexus Android OS: 4.3.0 Webkit version 537.36   I've also checked this with Firefox browser and observed similar issue.

The "Your Answer" textbox seems to be eating the flagging dialog as shown in Figure A.


I am not from a country that regularly airs Doctor Who, and I wanted to know, what is doctor who's original name?  Does anybody knows this secret ?  Wikipedia said it was unrevealed, but I myself have seen doctor saying that he knows his name(obviously).   Also, I thought, Wikipedia is edited by the people, and it is not straight from the horse' mouth.

I recently decided to watch Doctor Who, and started viewing the 2005 version. I have the first two episodes from the first season, and I can't help but wonder what is the etymology of the name "Doctor Who"? And why does the protagonist call himself "the Doctor" (or is it "the doctor")?


I searched all over the internet but didn't find a formal proof for this , so here is my attempt:  $\exists x[P(x)\implies \forall yP(y)]$  Let $x=x_0$. Thus $P(x_0)$ is given.  Let $y$ be arbitrary. So we have to prove $P(y)$.  $y$ being arbitarary means that either $y=x_0$ or $y\ne x_0$.  So now we prove $P(x_0) \lor P(z)$ where $z$ is arbitrary and $z\ne x_0$.  $P(x_0)$ is given. So the paradox is true. $\square$  Is this correct ? If not what is wrong ?

Why is this true?  $(\exists x)(P(x) \Rightarrow (\forall y) P(y))$


What is the right way of pronouncing "blessed"?   is it "blest" or "Bles-id"?   I hear people pronouncing it different ways, apparently both ways mean the same thing.

The word "baked" is pronounced as:      /ˈbeɪkt/   While "naked" is pronounced as:      /ˈneɪkɪd/   Why are these two words not pronounced the same?


We are struggling with how to incorporate AND/OR logic amongst a list of filters in our user interface.  I know this question has been asked many times, but I'm trying to fit the logic addition into an existing UI without making too many changes.    Here is what we currently have:  A user can build a chain of filters by selecting a filter from a list of filters, and then specifying a range or possible values for it.  The user then sees their filter chain as follows:  - Filter1 between 0 and 0.5  - Filter2 in (value1, value2, value3)  - Filter3 not in (valueX, valueY)  - Filter4 in (Present)  These filters are all AND-ed by default.  Now, we want to support more complex logical operations amongst the filters, such as ((Filter1 OR Filter2) AND (Filter3 OR Filter4)).  The idea I've come up with is that most users might not use this advanced query functionality, and so this grouping operation should be hidden under an Advanced tab or modal.  When the user builds their filter chain and sees the 4 filters, they can then click on 'Advanced', which will open up a query box for them with the 4 filter names preloaded (the box will only show Filter1, Filter2, Filter3, Filter4, without their constraints).  The user will then be able to type around these text tokens to introduce (, ), AND, or OR, to group them in any way they like.  Is what I proposed intuitive at all?  Are there sites that have already tackled this problem, and what solutions have they come up with?  Thanks for all your help!

I am looking for inspiration on this. We have a Dot.Net web application, where we are building pretty complicated criteria. It works, but I would like to change this, re-shape this, possibly from the ground up.  The idea: Basically there is a background process, we are receiving data. In order for us to parse it, they will set up criteria. We can call it "filter". It probably makes more sense  Example:   If the parsed data, has a "created date" field, that is a weekday, then do something If the parsed data, has a "code" field, that contains these letters "ABC", then do something else If the parsed data, has a "amount" field, and that amount is greater than 1000, than do something If the parsed data, has a "color" field, and that is one of these: "red, blue, green", then do something We are going to let the user go even deeper.   Example: If 1 AND 2 AND 3 AND 4 (from above) are all true, then "do something really specific"  You can go even further: If ((1 AND 2) OR (3 AND 4)) , from above, then "do something different"  I hope you see what I mean  So we have basically 2 steps A. let the user introduce 1, 2, 3, 4 somehow B. let the user make it more complicated  This all works. But in a totally non-user-friendly way.  I was wondering if there is something out there, that is well known, easy to use, easy to understand, that is doing the same thing.  I would really like to get some inspiration to rebuild our User Interface, which is currently using too much dropdownlists, checkboxes and such.  Any suggestions?


As far as I know this happens randomly. On reloading the page it shows the correct time for the last message sent. I don't think that Stack Exchange existed 17656 days (48.3 years) ago :P

In fact, of these, only Charcoal shows a recent time stamp.


I'm not sure if I toggled something and it made my manipulator icons disappear, but I can't find them when I would select an object or face, edge, or vertex. Help?

This is probably a easy question for a newb. but did I turn off a view toggle somewhere? Because my little arrows on the face, edge, or vertex I've selected is absent. Is there a toggle switch I accidently hit? photo on what I mean below...


A friend of mine made the claim that I should empty my water kettle and not reboil the water that was left over. He said it has negative health effects but could not explain why. Is he right, what would the reasoning be? What would these negative health effects be?

Out of laziness sometimes I re-heat the water in kettle we use to make formula milk for our daughter, but the health visitor said it's a bad practice to re-boil water over and over. Any specific reason for that?


This question has already been asked on this  but I cannot comment there. I want to run my STM32F4DISCOVERY board from external power supply, but it does not run as it should. As specified in the link, the led LD1 is red-blinking, and my code is not running. I updated the firmware of the board as suggested in the answers:    Is there something else I should do ? Some hardware modification maybe ? Currently there are jumpers on CN3 and JP1 connectors. Thanks in advance

I've recently finished programming the STM32F429ZI DISC1 board. I'm fairly new to this and now want to move away from connecting it to the PC via USB and power it up via a power supply.   At present I have connected a 5V supply to the 5V pin. This seems to power the board fine in that the LCD screen comes on (blank white), the PWR LED(LD2) lights up. However my program fails to initialise and stays blank, the COM LED(LD1) also flashes red at 1hz approx.   Has anyone experience with powering this board or other STM32 boards without a USB connection? And if so which Pin did you connect to and with what voltage.


I need in \subsection string with underscore, like ABC_XYZ.  \subsection{Text ABC_XYZ}  When I try to compile with pdflatex:  Missing $ inserted ...ine {1.2}Text ABC_XYZ}{4}{subsection.1.1.2} Extra }, or forgotten $ ...ine {1.2}Text ABC_XYZ}{4}{subsection.1.1.2}   I cannot write ABC\_XYZ. It is important for me to find this string ABC_XYZ automaticly. And I need this string in table of contents.  Option   \verb+ABC\_XYZ+    dont work.   Can you help me?

I have a question about a Verbatim, I want to write a word inside of the subsubsection title. I got an error. How can I fix it?: \subsubsection{The \verb+@interface+ Section}


So I am using QGIS 2.18.0 and have made a map template that uses the atlas generator in the print composer. It uses the grids settings for the map to add UTM north and Eastings along the sides of the map.    Is it possible to set the grids to adjust based on the scale of the map?    For example, the x and y interval for the grid would decrease automatically when the atlas generator is producing a map at 1:10 000 and then increase when the producing a map at 1:100 000? Similar to how the visibility of different layers can set based on scale.   Right now it appears that the grid can only be set to one interval.

I have ticked grid maps in Atlas composer. The problem is my maps don't have same scale to represent. Then, I would like to configure grid in such way that lines of grid  in different maps change automatically to each map  in order will have better fit line.  I think that data defined override can be fix it. But I haven't seen this options to interval grid.


I access my Gmail account from Firefox and when I log into gmail.com, my account seems to redirect to Google Inbox (inbox.google.com) rather than the Gmail (mail.google.com) interface I want to see and that I thought was the default.   I have been unable to find anything in the settings to stop this behavior.  Any ideas?

At some point after switching to Inbox for Google I set it as the default that my account sees at mail.google.com. Now, I want to disable it and return to the old Gmail interface, but I can not, for the life of me, find a setting that will allow me to do it.  How do I change my account's mail interface back to the old Gmail one?  If it matters, my account is a Google Apps account, not a Gmail one.


In a default Flask app, PyCharm generates the following code:  from flask import Flask app = Flask(__name__)  @app.route('/') def hello_world():     return 'Hello, World!'  if __name__ == '__main__':     app.run()   In almost all of the tutorials I'm following (socketio, right now), It wants me to add initialization code within the if statement (like so):  if __name__ == '__main__':     app = socketio.Middleware(sio, app)     eventlet.wsgi.server(eventlet.listen(('', 8000)), app)   QUESTION  __name__ seems to always equal app Which means __name__ does not equal __main__ and therefore will not enter this if statement. What exactly is the purpose of this if statement? Is it PyCharm specific or maybe some way to start the application in production? If so, how does production automatically set the __name__ to __main__?  Trying to figure out where these variables come from so I can figure out proper placement of code (ie: socketio).  Reference:

Given the following code, what does the if __name__ == "__main__": do?  # Threading example import time, thread  def myfunction(string, sleeptime, lock, *args):     while True:         lock.acquire()         time.sleep(sleeptime)         lock.release()         time.sleep(sleeptime)  if __name__ == "__main__":     lock = thread.allocate_lock()     thread.start_new_thread(myfunction, ("Thread #: 1", 2, lock))     thread.start_new_thread(myfunction, ("Thread #: 2", 2, lock))


I'm new in ubuntu server or any server (in fact) probably I've done something wrong. I'm trying to install docker and when I run:  sudo apt-get install \ linux-image-extra-$(uname -r) \ linux-image-extra-virtual   I get this:  update-initramfs: Generating /boot/initrd.img-4.4.0-83-generic cryptsetup: WARNING: failed to detect canonical device of /dev/xvda3 cryptsetup: WARNING: could not determine root device from /etc/fstab W: mdadm: /etc/mdadm/mdadm.conf defines no arrays. gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-4.4.0-83-generic with 1. dpkg: error processing package linux-firmware (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: linux-firmware E: Sub-process /usr/bin/dpkg returned an error code (1)   I've searched online and nothing worked, sadly. My kernel is 4.4.0-83-generic. Thanks to all.

My first issue was when I tried to apt-get update or apt-get upgrade. On upgrade I get the following error:  You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: linux-image-server : Depends: linux-image-3.2.0-27-generic but it is not installed E: Unmet dependencies. Try using -f.   I tried running apt-get install -f and this was the output(after saying yes on prompt)  (Reading database ... 186183 files and directories currently installed.) Unpacking linux-image-3.2.0-27-generic (from .../linux-image-3.2.0-27-generic_3.2.0-27.43_amd64.deb) ... Done. dpkg: error processing /var/cache/apt/archives/linux-image-3.2.0-27-generic_3.2.0-27.43_amd64.deb (--unpack):  failed in write on buffer copy for backend dpkg-deb during `./boot/System.map-3.2.0-27-generic': No space left on device  No apport report written because the error message indicates a disk full error                                                                           dpkg-deb:    error: subprocess paste was killed by signal (Broken pipe) Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.2.0-27-generic   /boot/vmlinuz-3.2.0-27-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.2.0-27-generic /boot/vmlinuz-3.2.0-27-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.2.0-27-generic_3.2.0-27.43_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)   I tried running apt-get autoremove and it gives me the same error as apt-get upgrade.  When I run df, I get this for /boot:  /dev/sda1                    233191     230297         0 100% /boot   So, I read elsewhere that I should try to purge old kernels. I checked for what kernels I had with:  $ dpkg -l linux-image-\* | grep ^ii ii  linux-image-2.6.38-13-server  2.6.38-13.52  Linux kernel image for version 2.6.38 on x86_64 ii  linux-image-3.0.0-13-server   3.0.0-13.22   Linux kernel image for version 3.0.0  on x86_64 ii  linux-image-3.0.0-14-server   3.0.0-14.23   Linux kernel image for version 3.0.0  on x86_64 ii  linux-image-3.0.0-15-server   3.0.0-15.26   Linux kernel image for version 3.0.0  on x86_64 ii  linux-image-3.0.0-16-server   3.0.0-16.29   Linux kernel image for version 3.0.0  on x86_64 ii  linux-image-3.0.0-17-server   3.0.0-17.30   Linux kernel image for version 3.0.0  on x86_64 ii  linux-image-3.2.0-24-generic  3.2.0-24.39   Linux kernel image for version 3.2.0  on 64 bit x86 SMP ii  linux-image-3.2.0-25-generic  3.2.0-25.40   Linux kernel image for version 3.2.0  on 64 bit x86 SMP ii  linux-image-3.2.0-26-generic  3.2.0-26.41   Linux kernel image for version 3.2.0  on 64 bit x86 SMP   When I try to remove the oldest with this:  $ sudo apt-get purge linux-image-2.6.38-13-server Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-image-server : Depends: linux-image-3.2.0-27-generic but it is not going to be     installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).   How can I free up or extend boot without messing up my installation?


We know the WIM is Windows Imaging Format,   such as we know the install.wim, is it mean all of a disk's copy?  if the disk have four partitions, will the install.wim contains all the four partitions and the contents of them?     I mean whether a .wim file is a disk's all copy? contains all the partitions of a disk?     the other question is how can install.wim file can install a Windows OS? is there any install programs in it?

When I read the definition of :     ImageX is a command-line tool that allows an administrator to capture an image of an entire hard disk drive and its files and folders in a single Windows Imaging Format (WIM) file.     I can understand the its files and folders, but I don't know the an entire hard disk drive, what's the meaning of it?    Edit-01  We know the an entire hard disk drive means an entire physical disk with its contents and filesystem in it.     But how to understand ImageX capture an entire hard disk drive and xxx?   How can ImageX can capture a an entire hard disk drive? is it mean ImageX only capture the contents and filesystem of an entire hard disk drive?   Or contain other information?


I lost the downloads directory by mistake. Updates did not replace it. I do not want to reinstall UBUNTU as a solution to fix this issue. I am using UBUNTU 18.04. I get a message asking me to use blueman-services to configure a downloads directory but I couldn't. Is there a solution other than reinstalling UBUNTU?

When I boot Ubuntu from Odroid, this message always appears:    I change hostname and other, and I use usermod -d to change home directory, but I don't know why that message appears. When I use a terminal it always says:   odroid@odroid$    But after change it says:   JARVIS@JARVIS:/home/JARVIS$   why?


I am looking to developed the test class for the following code. How we can write class for the following code?  Actually when below trigger executes it send Case Attachments (present in attachment section) in email to Legal team  trigger sendEAttachmentsInMail on Case (before insert, before update){  for(Case casevar : Trigger.new){          Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();         mail.setBccSender(false);         mail.setUseSignature(false);         mail.setTargetObjectId(casevar.Id);         mail.setTemplateId('XXXXXXXXX');         mail.saveAsActivity = false;        //Set email file attachments         List<Messaging.Emailfileattachment> fileAttachments = new List<Messaging.Emailfileattachment>();         for (Attachment a : [select Name, Body, BodyLength from Attachment where ParentId = :casevar.Id])         {         // Add to attachment file list         Messaging.Emailfileattachment efa = new Messaging.Emailfileattachment();         efa.setFileName(a.Name);         efa.setBody(a.Body);         fileAttachments.add(efa);         }         mail.setFileAttachments(fileAttachments);       //Send email         Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });          } }

I want to create a case which has an attachment, Billing Account, and topics. Given below is the code from my Test Class:  Scenario: Once user submit the case request and ask for approval. The request goes to the Manager for approval, once the request approves, an email goes to Legal team with an Case attachments in an email.  Topic__c tc = new Topic__c(Name ='My New topic'); Attachment att = new Attachment(Name = 'sample.pdf');  Case c = new Case(Origin = 'Phone',                           Subject = 'New Testing',                           Department__c = 'XXXXXXX', Priority = 'Normal',                           Topic__c = tc.Id,                           Risk_Approval__c = true); insert c;   I am getting the below error:     System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, CaseTrigger: execution of BeforeInsert   My Trigger class:  trigger sendEAttachmentsInMail on Case (before insert, before update){  for(Case casevar : Trigger.new){          Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();          mail.setBccSender(false);         mail.setUseSignature(false);         mail.setTargetObjectId(casevar.Id);         mail.setTemplateId('XXXXXXXXX');         mail.saveAsActivity = false;        //Set email file attachments         List<Messaging.Emailfileattachment> fileAttachments = new List<Messaging.Emailfileattachment>();         for (Attachment a : [select Name, Body, BodyLength from Attachment where ParentId = :casevar.Id])         {         // Add to attachment file list         Messaging.Emailfileattachment efa = new Messaging.Emailfileattachment();         efa.setFileName(a.Name);         efa.setBody(a.Body);         fileAttachments.add(efa);         }         mail.setFileAttachments(fileAttachments);       //Send email         Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });          } }


I inherited my mother's inheritable IRA in 2011; present value $200k. I'm now 60.  I've been buying and selling mutual funds within the IRA, making a little profit, and also buying a specific stock.  If the stock hits really big this year, I want to sell it and distribute it from the IRA. Will it be taxed as ordinary income?

I inherited my mother's $200k IRA in 2011.  I'm now 60.  I've been buying and selling mutual funds within the IRA, making a little profit, and also buying a specific stock.  How is it taxed if I take out any amount right now?


I forward my work email to my Gmail and I want to respond automatically without having to select my work email from there.  How automatically to respond from the email where I received mail from automatically?

In short: In Gmail, is there a way to let the "send from" address change automatically depending on which of my accounts it was sent to?   In long:  I recently joined a team (of developers) and they provided me with an email address on their domain (for if I have business with a client or something).    Anything sent to me@team.com is forwarded by the team.com mail server I'm using Gmails "send mail as" functionality to send email through smtp.team.com. I receive emails and I can send them, so that works I have my default "send as" address setup as me@Gmail.com, which I would like to keep since I send 90% of my mail through there.   Now I'm wondering how to do the following, if at all possible:   when I receive an email at me@team.com (as opposed to me@Gmail.com), and I reply to it, my "send as" address will change automatically to me@team.com I can do it manually, but I know I'm going to forget sooner or later, confusing the hell out of people since the team lets me use a pseudonym.   I hope my question makes sense, and I'm sure it's easily answered by a "no, not possible" or "yes, option X in tab Y".


Shield spell says     Casting Time: 1 reaction, which you take when you are hit by an attack or targeted by the magic missile spell   Let's say I attack with a total attack roll of 16, and target AC is 15. The target then casts shield. His AC is now 20.  I have Tavern Brawler feat, which has this benefit:     When you hit a creature with an unarmed strike or an improvised weapon on your turn, you can use a bonus action to attempt to grapple the target.   With my attack roll of 16, against 20, which was a hit, can I use my bonus action to grapple the target?   My player's argument is that the attack hits, then deflected, so it still counts as a hit, and therefore able to use bonus action to grapple. Usually I simply call the attack "a miss", but the argument seems sound. So I need to ask this question:  Does Shield spell turn a hit into a miss?

The entry for Shield says that the reaction is triggered by being hit by an attack, which would tend to imply that you can wait to see if your opponent actually succeeds on their attack roll (otherwise they would not be hitting you with their attack) to beat your AC before deciding whether or not to cast the spell. However, wouldn't that be considered meta gaming? After all, my character does not know whether the attack will hit or miss; only that he or she is being attacked.


Is there anyway to set math font as non italic ? I thought this was a pretty good solution  until I started using \sum. I wanted the subscript to be non italic as well.

I have a whole section full of text that contains lots of letters with supscripts. I've been using math mode to do this, but the result doesn't look so nice with all the letters in italics (it looks like a math paper when it isn't).   I also know about \textsubscript to use subscripts outside of math mode. Is there a way I could wrap my entire section in an environment to disable italics in math mode?  \documentclass[11pt]{article} \begin{document} Lorem ipsum $A_1$ dolor sit $B_1$ amet, consetetur sadipscing $C_1$ elitr, sed diam nonumy $AB_1$ eirmod tempor invidunt $BA_1$ ut labore et $ABC_1$ dolore magna aliquyam $B_2$ erat, sed diam $A_1$, $A_2$, $A_3$ voluptua. At vero eos et $B_1$ accusam et justo duo $C_2$ dolores et ea rebum. \end{document}


Usually it is possible to add a missing tag to a question without editing the question. However, while editing some questions, the editor makes invisible changes automatically, as for example in version 3 here:  This might be due to the CommonMark migration, as mentioned . Such invisible changes cause the error "Edits must be at least 6 characters; is there something else to improve in this post?" and thus prevent users below 2k reputation from adding tags to only those answers. I'm not asking . I'm reporting a bug, where the site doesn't behave as intended (i.e. doesn't allow to add tags without editing the question) on some questions.

When clicking "edit" I see:  Your edit will be placed in a queue until it is peer reviewed. We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.  Like:     Likewise, when I am not logged in, clicking "improve this question" or "improve this answer" shows:  You are not . Your edit will be placed in a queue until it is .  And when I click 'Save', I get:  Thanks for submitting an edit. It is only visible to you until it's been approved by trusted community members  Like:     Who can suggest an edit? Where do suggested edits go? Who can vote on a suggested edit? How do suggested edits get reviewed? Can I earn reputation? What about abuse or bad edits? Sometimes the Community user approves or rejects my edit. Why is that? When can I not suggest an edit? Is there a minimum change requirement for a suggested edit? How do I check my suggested edit history? I disagree with the reasons why my suggested edit was rejected. What can I do? How do I know whether there are edits waiting for review? Someone suggested an edit to my own post, and the reviewers took the wrong action. What can I do? Are tag wikis included in this scheme? What do the "Improve Edit" and "Reject and Edit" buttons do? Why are apparently valid links to rejected edits resulting in 404 errors?   For more information about editing, see "" in the .


I have a BugZilla system, but it's exposed to the whole network - people don't have to log in in order to see the bugs (they cannot submit new ones or change, but they can see everything).  How do I make logging-in mandatory?

Bugzilla has to have a way to stop anyone random person to view the bugs, but I can't find it.  This question is similar to  , but there is no answer to the question.    To elaborate further, as of right now, anyone can access my bugzilla server, and click on the Browse button to view any bugs we have listed.  I've searched through all the administrative settings, and I can't find a way to disallow this.  Surely it exists.  Any help would be appreciated.  using Bugzilla 4-4.2


Can someone please explain me why this code doesn't erase all 1s from the vector:  for (int i = 0; i < numbers.size(); i++) {     if (numbers[i] == 1)     {         numbers.erase(numbers.begin() + i);     } }

I want to clear a element from a vector using the erase method. But the problem here is that the element is not guaranteed to occur only once in the vector. It may be present multiple times and I need to clear all of them. My code is something like this:  void erase(std::vector<int>& myNumbers_in, int number_in) {     std::vector<int>::iterator iter = myNumbers_in.begin();     std::vector<int>::iterator endIter = myNumbers_in.end();     for(; iter != endIter; ++iter)     {         if(*iter == number_in)         {             myNumbers_in.erase(iter);         }     } }  int main(int argc, char* argv[]) {     std::vector<int> myNmbers;     for(int i = 0; i < 2; ++i)     {         myNmbers.push_back(i);         myNmbers.push_back(i);     }      erase(myNmbers, 1);      return 0; }   This code obviously crashes because I am changing the end of the vector while iterating through it. What is the best way to achieve this? I.e. is there any way to do this without iterating through the vector multiple times or creating one more copy of the vector?


I just can't scroll to the bottom to see what I type in when I open the keyboard.    App Version: 1.4.2.2 Device: iPad 2 (GSM) OS Version: Version 9.3.2 (Build 13F69)

When I try to post a message using the new chat on mobile, I can't see the edit box and I can't scroll down. I have to type on good luck.        Please show the edit box.    I am on iOS 9.3.2 on an iPhone 6


I am new to Ubuntu.  I have a DINOSAUR machine that was not being used, and thought it would be a learning experience to wipe it clean and try a Linux-based OS.  14.04 LTS was installed on a completely clean hard drive (DoD wipe specifications).  Ubuntu OS boots just fine, but ALL operations are extremely slow to react to user inputs.  Computer specs:       14.04 LTS 32-bit OS; 512MB (495.2 MiB reporting) PC2700 DDR 333MHz RAM; Intel® Pentium(R) 4 CPU 2.40GHz; VGA Video: Radeon 9000 Series R200 (RV250 4966) x86/MMX/SSE2 TCL DRI2; 60 GB Hard Drive (58.4 GB reporting); 8PE667U Gigabyte Motherboard, BIOS: Award v6 Oct2002   Thus far, only diagnostic action was to generate 'system.html' with a report of all  components.  Some of the blocks are highlighted in red, but I am not experienced enough to interpret the results and take corrective action.  Is there a way to share the file with this community to help expedite a potential solution?

I just installed Ubuntu 14.04 on a Dell laptop with 1.7Ghz Pentium M and 1Gbyte memory.  Graphics are Intel® 852GM/855GM x86/MMX/SSE2, OS type is 32bit.  The whole system is VERY slow. When I launch the applications manager, for example, I need to wait in order to see the letters I typed appear!  It is as if the CPU was overloaded and no memory available, but I only have Firefox running.  How can I make the system run smoother? It used to have Windows XP installed and it worked fine.


I would like some examples of very rigorous books on probability and statistics. I know there are lots of rigorous books on probability by itself, but I am also looking for a book that makes rigorous the theory behind statistics. From my understanding, there is a difference between probability theory and statistics.

what are some good books on probabilities  and measure theory? I already know basic probabalities, but I'm interested in sigma-algrebas, filtrations, stopping times etc, with possibly examples of "real life" situations where they would be used  thanks


Regrettably now I've been working with a 15.04 build for awhile, all changes and services are working perfectly and I'd hate to start fresh and rebuild them from scratch.  It appears that I can no longer upgrade to 15.10 and then subsequently upgrade to 16.04 and so on.  I've tried a number of the suggested methods to get this done but this appears to be dependent on referencing old-releases.ubuntu.com repositories for vivid and wily, which they do not appear to.  So none of it's working. Is there some "nice" way to migrate without a fresh install and reconfiguration that anyone can suggest?

Recently I have installed an older version of Ubuntu on my old machine. Whenever I try to install any software, I get an error saying it couldn't be found:  $ sudo apt-get install vlc Reading package lists... Done                Building dependency tree        Reading state information... Done     E: Couldn't find package vlc


I am using the ACM format but somehow I am getting my own paper as Reference format. Here is  (stackexchange won't let me upload it)  I wish someone could help! Thanks!

I have downloaded the new ACM template for conference proceedings (sigconf format). Even when I comment out the lines that are related to conference information, price, DOI, etc. I get the following lines on the first page:  Conference’17, Washington, DC, USA 2016. 978-x-xxxx-xxxx-x/YY/MM. . . $15.00 DOI: 10.1145/nnnnnnn.nnnnnnn   I have uncommented the line  \setcopyright{none}   so the copyright notice is gone, but the above information is still there (from acmart.cls)  Additionally, I get the paper's name on odd pages and conference information at the top of every page. How should I remove these lines?


Assume, I need to use an opamp with +9 V and -9 V supplies. While prototyping, etc., I can and probably would use a DC power supply. Since it has multiple channels, it is easy to have +9 and -9 volts.  However, when it comes to finalize the project, making it a standalone box, which will get its power, let's say by batteries, how are +9 and -9 volts obtained?  I only can think of using two 9 V batteries with reverse polarities connected to a common ground. However, my insights tell me that there may be another way of doing that without using two batteries. Because I don't think in every module which consists +/- power rails, there exists two separate power supplies.

Power supplies are available in a wide range of voltage and current ratings.  If I have a device that has specific voltage and current ratings, how do those relate to the power ratings I need to specify?  What if I don't know the device's specs, but am replacing a previous power supply with particular ratings?  Is it OK to go lower voltage, or should it always be higher?  What about current?  I don't want a 10 A supply to damage my 1 A device.


It's late please don't shoot me for lack of research on this one but SEO is a whole field of it's own and I have no idea where to start.  I have a site (fightingfantasy.net) that used to be fightingfantasy.org - I lost the domain name several years ago due to hospitalisation to speculators (last I knew they wanted in excess of £500 for it and I survive on welfare) ) so I rebranded as the .net  I used to rank page 1 on google for the term 'fighting fantasy' (and very well for 'gamebooks' and so on). Now I rank nowhere at all - I mean nowhere. I took the advantage to develop my site somewhat (it is largely a labour of love and generates no money), for a numberof years however the utter lack of search related traffic has become crushingly depressing.  The only explanation I can think of is that Google reckons I am a clone. If anyone at all has any idea what I can do... please help... StackExchange you are my only hope...  (originally posted on StackOverflow in ignorance :-/ )

What are the best ways to improve a site's position in the Google search results?


Is the Fourier transform of an integrable function ( in $L^1(-\infty, \infty)$ ) also integrable? Put another way if: $f \in L^1(\mathbb{R})$ then is   $$  \hat{f}(t) = \int_{-\infty}^\infty e^{i xt} f(t) \, dt \stackrel{?}{\in} L^1(\mathbb{R})$$  It would seem to me perfectly reasonable the Fourier transform $\mathcal{F}$ takes $L^1$ to itself since it is an isometry on $L^2$.

I am looking for an example of a function $f: \mathbb R \rightarrow \mathbb R$ such that $f \in L^1$ in the sense that $\int_{\mathbb R} |f| < \infty$ but its Fourier transform $\hat f$ is not in $L^1$. Does anyone have one?  Thanks.


So I created this beaded bracelet and want to know if it possible to animate the path so it looks like it is "wiggling" (ideally grab two opposite vertices and move them around.)  Since it is a nurbspath I cannot parent, and using a curves modifier and then changing the path  doesn't seem to do anything.  The string and beads are a joined object with a curves modifier already applied for this initial shape.

How can I animate the position of a Bézier curve segment as shown in the images below?


This rectangular hole is extruded to the inside, then I tried beveling it to maintain shape, but after I add the subdivision it becomes an ellipse. How do I keep the rectangular shape?

How can I use the subdivision surface modifier to create more high poly meshes without ruining sharp edges? For example this mesh  The sphere should be subdivided but the rim of the cylinder should stay the same because it is a sharp edge. This is the result of the subdevision  How can I get sharp edges to not be affected by the sub surf mod?


I'm trying to log the details of the programs that where failed due to the limit cap defined in the limits.conf. My initial plan was to do it using the audit system. The idea was to track the system calls related to limits in the limits.conf that where failed.   However the problem with this approach is that, it's not possible to track the violations of CPU time, since that violation doesn't involve failure of system calls. In the case of CPU time, one thing happens is that the program which violated the CPU time will be delivered a SIGXCPU.   So my questions are:   How should I go about logging the programs that violated CPU time?  Also is there any limits.conf specific logs available?

Is there a log file that logs information when the values set in /etc/security/limits.conf are exceeded?  If not is there a way to make it log when the values are exceeded?


Are the concepts of login/non-login shells the same as the concepts of non-interactive/interactive shells (respectively)?  Or are the concepts orthogonal yielding four different combinations?  I am trying to get a clear picture of which .bashrc, .bash_profile scripts get sourced under various circumstances and I find that articles sometimes use these concepts interchangeably.

I understand the basic difference between an interactive shell and a non-interactive shell.  But what exactly differentiates a login shell from a non-login shell?  Can you give examples for uses of a non-login interactive shell?


Let $R$ be a Noetherian ring, $M$ a finite $R$-module and $I$ an ideal of $R$. Show that $\operatorname{grade}(I,M)\ge 2$ iff the canonical homomorphism $M \mapsto\operatorname{Hom}_R(I,M)$ is an isomorphism.   This question is Exercise 1.2.24 in the book: Winfried Bruns and Jürgen Herzog, Cohen-Macaulay Rings, Cambridge University Press, 1998.

I need to prove the following statment (actually a special case of it).     Let $R$ be a Noetherian ring, $M$ a finite $R$-module and $I$ an ideal of $R$. Then   $\operatorname{grade}(I,M)\geq 2$ if and only if the homomorphism $M\rightarrow$Hom$_R(I,M)$ given by $m\mapsto(i\mapsto im)$ is an isomorphism.   This is Exercise 1.2.24 in Bruns and Herzog, Cohen-Macaulay Rings.


I have a Max10 dev board with a 10m08 chip on it. I made a simple counter to blink the LED's. My counters have asynchronous resets, and my asynchronous reset has a circuit to keep it low for two clock cycles and prevent metastablity. I reset the fpga and it the counters stop (they all go to zero), it only starts counting when I upload a new flash to the dev board. If I power down the FPGA and power it back up I get the same result. This leads me to believe that its not my reset and its more of a flashing problem. Is there some kind of setting to make the flash stick? or should I go back to debugging. How do you make the flash persistent, I don't see an option for that in the programmer, do you have to configure the user flash?

I recently bought a Cyclone II FPGA .  I have been able to program it with a USB Blaster cable and the Altera Quartus Software.  The problem is that when I disconnect power, I lose the program.  How do I program it so it will continue its operation after power is lost?  Note: this question is similar to  one, but the name of the question made it hard to search for, so I agree with "The Photon" that this one should be kept open.


Question Let $f$ be a differentiable function on $\mathbb {R}$ such that $$\lim\limits_{x \rightarrow -\infty} f(x) = 1\ \mathrm {and} \lim\limits_{x \rightarrow \infty} f(x) = 1.$$ Prove that there exists $c \in \mathbb {R}$ such that $f'(c) = 0$.  My working Pictorially, I believe it is trivial to see that this is true, as one can just imagine some function that has a horizontal asymptote of $x = 1$. Mathematically, in general, I know that Rolle's Theorem says that if a differentiable function, $g$, has two points, say, $a$ and $b$, such that $g(a) = g(b) = c$, where $c$ is a real constant, then $\exists\ d \in \mathbb {R}$ such that $g'(d) = 0$. Thus, my intuition is to apply Rolle's Theorem on $f$ and we are done, but I also note that $-\infty$ and $\infty$ are not actually points that $f$ can "reach", so I am not sure if this approach works.  If my intuition is correct, how should I phrase my proof? If it is incorrect, what should be the correct approach to this question? Any help will be greatly appreciated :)

Let $f : \mathbb{R} \to \mathbb{R}$ be a function which is differentiable everywhere on $\mathbb{R}$. If we know that  $$\lim_{x\to-\infty}f(x) = L = \lim_{x\to\infty}f(x)$$ How would one go about showing that there must exist $c \in \mathbb{R}$, such that $f'(c) = 0$ for all cases at once?


I'm playing minecraft single player and every time I try to destroy or place blocks in every world and game mode it always comes up with the chat control instead.I tried restarting it and creating new worlds but nothing seems to be working. What should I do?

I'm playing on a Survival world with cheats on, "easy" difficulty, and at night in-game. I didn't have a sword or anything to make a sword with, and I was starving, so I switched to Creative to give myself a stack of food and a bed to set my spawn point. When I switched back to Survival, I couldn't destroy or place blocks. I'm on single player, and my Internet is fine, and I can destroy blocks still if I switch to creative. I've tried resetting the button one, and reloading the map, and it still doesn't work. I've even tried deleting everything I gave myself in Creative. This happened before on a different world and I ended up deleting it.  This only happens on this world. How do I fix it?  If I know I'm in the correct game mode, what else can cause this?  Are there different causes in multiplayer?


Here is a question:  For measurable set $E$ and $F$, with positive measure (in the sense of Lebesgue measure), prove that there is an open interval in the set $E+F$.   I know this is a question from Stein's Real analysis. The point is that I don't know how to prove it using Fubini's theorem. Thanks in advance.

This is a question from Stromberg related to Steinhaus' Theorem:     If $A$ is a set of positive Lebesgue measure, show that $A + A$ contains an interval.   I can't quite see how to modify the Steinhaus proof though.


If I run a command like   grep -rl test . | xargs vim   I get a warning "Vim: Warning: Input is not from a terminal." But I am still able to edit the files. Why the warning?

I have about 10 php.ini files on my system, located all over the place, and I wanted to quickly browse through them. I tried this command:  locate php.ini | xargs vi   But vi warns me Input is not from a terminal and then the console starts getting really weird - after which I need to press :q! to quit vi and then disconnect from the ssh session and reconnect to have the console behave normally again.  I think that I sort of understand what's happening here - basically the command hasn't finished when vi started so the command maybe hasn't finished and vi doesn't think that the terminal is in normal mode.  I have no idea how to fix it. I have searched Google and also unix.stackexchange.com with poor luck.


How the spring constant changes when a spring is cut into equl or rational halves? What is the relation with the original K?

I've always been taught that the spring constant $k$ is a constant — that is, for a given spring, $k$ will always be the same, regardless of what you do to the spring.   My friend's physics professor gave a practice problem in which a spring of length $L$ was cut into four parts of length $L/4$. He claimed that the spring constant in each of the new springs cut from the old spring ($k_\text{new}$) was therefore equal to $k_\text{orig}/4$.   Is this true? Every person I've asked seems to think that this is false, and that $k$ will be the same even if you cut the spring into parts. Is there a good explanation of whether $k$ will be the same after cutting the spring or not? It seems like if it's an inherent property of the spring it shouldn't change, so if it does, why?


I rarely use '' ( or ) and use '' () all the time as part of my signature on emails and so forth.  I realize the Swung Dash (⁓) and Tilde (~) are very similar, I just find the longer one more aesthetically pleasing for signatures and stuff like that.  Is there a way I can remap ^ to ⁓ ? Or when remapping keys is it all or nothing?  Any advice is welcomed!   ⁓ Ev   PS ⁓ See, there it is.  Twice.  In the signature and PS!

I cannot make xmodmap run on login in Ubuntu 13.04. I have searched around, including in askubuntu and all answers I found do not work.  I have a file named .Xmodmap in my home folder which contains the desired mappings. If I run it manually it works fine, so there is no error there. In order to make it run on startup, I have tried:     Using various .xinitrc containing one of the following commands:      xmodmap .Xmodmap xmodmap ~/.Xmodmap   /usr/bin/xmodmap /home/NAME/.Xmodmap if [ -s ~/.Xmodmap ]; then xmodmap ~/.Xmodmap fi  Using .Xresources instead of .xinitrc with the same variations. Setting it as a startup application.   None of the above works in Ubuntu 13.04 (64-bit). I also saw a few ideas about globally changing the keyboard mappings, but most of them were not applicable in Ubuntu 13.04 (i.e. the corresponding files did not exist where specified) and I prefer not to touch the global settings anyway.


Appear means to come into visual consciousness, but what word do we use to indicate a sound has come into consciousness?

The idea behind something appearing is more visual in nature; it comes into sight.  What would I say if something "appeared audibly"? The sound of the oncoming car appeared to my ears!   all seem to stick to visual, material, or abstract concepts; nothing for auditory elements stand out.


I'm currently doing an essay and I haven't previously given context  "private contractors with top secret clearance had access to GCHQ databases." how d I explain what GCHQ is?  Is this correct? "private contractors with top secret clearance had access to GCHQ[Government Communications Headquarters] databases."  Or should I just put if after the quote?

When dealing with abbreviations, should you parenthesize the abbreviation or its expansion? I have seen it both ways. Can anyone make a good case for preferring one style over the other?


I use an app called "GPS Tracks" to track my movements throughout the day with my iPhone 6 on iOS 9.2.1. The app often shuts down while it is actively recording in the background, which the developer indicated is something that happens when memory runs low.  Is there anything I can do to either 1) prevent iOS from shutting down a specific app for memory reasons or 2) tell iOS which apps to shut down first or 3) be warned when the app is closed by iOS.  I am ready to jailbreak it if necessary.

As I was using an app on my iPhone, I accidentally hit the home button. I quickly reopened the app. But instead of it resuming where I left off, the app had to load all over again. (This was Clash of Clans and I was in a raid!)  Is there a way to keep an app open in the background?  Such a feature would also allow me to quickly check something and then return to the app that I was on.


Does the engine's thrust not contribute to the lift?  Here are my thoughts:  There are two types of aircraft resistance, one is the resistance created to create lift, referred to as lift resistance, and the other is other resistance.  Why is there lift resistance?   Because the wing has an angle of attack, there will be an area in the direction of the speed of the wing, so there will be lift resistance.    The engine's thrust balances lift resistance and other resistances to make the aircraft fly.  So does thrust contribute only to overcoming resistance and not contribute to lift?  Because drag contains lift resistance, and overcoming lift resistance is generating lift.  If the lift resistance is not overcome, the aircraft cannot move and the wings cannot generate lift.  Moreover, even if the aircraft is moving, if there is no engine thrust to overcome the lift resistance, then the inertia overcomes the lift resistance, so the speed of the aircraft will continue to decrease and the lift will continue to decrease.  So to generate lift, there must be engine thrust to overcome the lift resistance.  The glider does not have an engine, but in fact the glider uses the component of gravity as the thrust to overcome the lift resistance, thereby generating lift.  So, in order to generate lift, the glider had to lose altitude.  The wing is similar to a inclined plane.  We all know that there must be a thrust object to be stationary on the inclined plane.  It is wrong to say that the thrust does not contribute to the stationary object on the inclined plane.    Why is the push-to-weight ratio smaller than 1?  Because the wing is an inclined plane, we all know that the smaller the angle θ, the smaller the force F that keeps the object stationary on the inclined plane.  The same is true for the wing. The angle of attack of the wing is generally small, so the ratio of the aircraft's thrust-to-weight ratio is less than 1.  Of course, this θ angle is not the angle of attack of the wing.  On the wing, this angle is the aerodynamic angle of the wing.  Generally speaking, the angle of attack is not equal to the aerodynamic angle.  But there is an internal connection between them.  Is my idea correct? ————-

In the absence of the effect of natural wind, a stationary aircraft will not move without the thrust of the engine, there will be no velocity without movement, and there will be no lift without velocity. So, in this case, the engine provides the lift of the aircraft. Am I correct?    The wing has an angle of attack, so although the engine pushes the aircraft horizontally, it still produces upward force. It's like pushing an object horizontally on an inclined plane.  Gliders are powered by gravity, so in this case, gravity is the engine. So basically, the engine provides the lift of the aircraft.  A glider needs initial velocity to fly. How does this initial velocity come from? How can there be lift without this initial velocity? How can there be lift without initial velocity?


I want to have a validation before saving a record on standard page layout of a custom object. before saving a record a popup message should be displayed. is this possible using any customization or visualforce and apex?

I need to implement alert popup on standard page layout on click of standard button "Save".How can i achieve it.I tried google but not getting a valid implementation.Any idea would be much appreciated.


Imagine the following example:     Feminists destroy, reduce, decimate, deconstruct, defame, destabilize, and fragment the female culture, history, sexuality, identity, reality, and truth.   In the above example, after "fragment" the author is done using verbs and has started a long list of words (objects, subjects?) that are the things that the previous verbs will be acting on.    The actual sentence that I read somewhere is quite similar to the above but in that case the author is using even a more complex sentence where she groups several words together, like she writes in the second part, "culture, history, and tradition" separated by semi-colon and then "body, sexuality, and gender", etc.  But I decided to keep it simple for my question here.    Please assume one is interested in keeping the sentence long and don't break it up into small parts.  Thanks for your help.

I have this sentence on my resume:     Develop the front-end of a platform using HTML, CSS, and Bootstrap to connect people and systems   Is there a comma after Bootstrap? I wanted to elaborate on the reason for building the application rather than simply listing the programming languages I used.


Looking at an hydrogen atom with the bohr model we get  $$L=n\hbar, \qquad n\in\mathbb{N}\tag{1}$$  for the angular momentum.  But by solving the Schrödinger equation, we get  $$L=\hbar\sqrt{\ell(\ell+1)}.\tag{2}$$  How is it possible these two equations give different values in some cases?  I have already seen this post regarding this topic  post regarding this topic. But the answer didn't really satisfy me. Because if i have $\ell=1$, the the solution of the Schrödinger equation gives me $L=\sqrt 2\hbar$. Thus I have still a contradiction to the Bohr-solution.  What am I missing here?

So when learning about the  of hydrogen and de Broglie waves, it was shown that treating the electron of hydrogen as a de Broglie wave results in the relationship $$L=n\hbar, \qquad n\in\mathbb{N}.$$ However, when learning about the azimuthal quantum number, it was stated that $$L=\sqrt{\ell(\ell+1)}\hbar.$$ So how come in the ground state ($n=1, \ell=0$), these two equations give different values for angular momentum? I feel like I'm missing something really important here. If it's the case that the Bohr model doesn't accurately describe the angular momentum of the electron in the ground state, why is the angular momentum zero?


I found basically identical questions - I saw one on  and immediately saw something rotten in the state of Denmark because this question has definitely been asked before. So I went and googled it for the OP and found  question, which is basically the same. The problems are:   I can't flag that it is duplicate of question on another server. I can't flag that this question belongs to Ask Different because it is not in the list of off-topic choices. Even if I did manage to do 2. I would introduce duplicate question on Ask Different.   What I did was simply comment that there are two similar questions out there, but surely that doesn't really fix this issue. What would be the best way to approach this?

What's the right course of action for cross-site duplicates?  There are two flavors:   A question is posted which belongs on another site and ends up already having been asked there. I can't find an example right now, but it's bound to happen soon if it hasn't already. The same question is posted in two places at the same time. Take  for example, which is a duplicate of , posted within a half hour of each other by the same user.   Possible actions:   Move it to the proper site and close it once it gets there as a duplicate. Provide a way to close it right away as a cross-site duplicate, without moving it first. Flag it and let a moderator merge them. Close it as "no longer relevant" or something else.   Additionally, flavor 2 is a bit of a special case; perhaps the question really spans both sites in terms of content and intended audience. Should multiple-postings in this case be allowed? If so, should they somehow be linked to each other? If not, how do we avoid a migration war?