Tricks
http://www.techradar.com/news/computing/apple/top-25-os-x-terminal-commands-696443
http://www.learningosx.com/101-ways-to-tweak-os-x-using-terminal/
Random Background
Imagewise: http://www.macworld.com/article/1060039/termbkgnd.html
Colours: Random Terminal Colors
Profile
http://arstechnica.com/civis/viewtopic.php?t=1215355
https://github.com/jesperrasmussen/mathias-dotfiles/blob/master/.osx