Writing a Unix Shell
I have a pretty good idea for a shell but I don't know when I'll ever find time to implement it.The idea is that the shell should be able to optimize pipelines. Pipeline here meaning a chain of commands piped into one-another.So if you have a pipeline like    grep ^2017-05-29 /var/log/somefile | grep -v 'INFO|WARN' | tail -n5 | cut -f1 -f3

Then the idea is that instead of piping the whole result from command to command, your shell would compile a set of commands into a single program and run that.Now you might say that that sounds like it goes against the Unix philosophy, but actually it doesn't need to. If all of the core utilities were implemented in such a way that their logic could be extracted without duplication of code then the shell can still be doing "one thing and one thing well".---Another idea I have is to make these core utilities pipe objects instead of text, like on Windows. I am very fond of bash but I think one thing that Microsoft seems to have done right is to have the idea of being able to work on objects in PowerShell. But I don't want PowerShell. I want a mostly Unix shell, except, as I said, with objects.I just wish I had more time :(