IBM's Intro to Bash Unix as an IDE Awk in 20 mins https://www.mankier.com/blog/explaining-shell-commands-in-the-shell.html "cut" text probing files http://www.unix.com/man-page/osx/1/OTOOL/ https://en.wikipedia.org/wiki/Ldd_(Unix) https://github.com/robbyrussell/oh-my-zsh/wiki/Coding-style-guide https://github.com/jlevy/the-art-of-command-line