So there is now a PPA for Cinnamon which makes it incredibly easy to install on Ubuntu. If you are sick of Gnome 3, Unity, etc and just want your old traditional Gnome 2 style desktop back then you are almost required to try Cinnamon (which is a fork of the older Gnome).
This program is a simple program that uses pipes to relay information. In this case, the information is a string which the case is inverted and then displayed. This program was written on Minix using the elvis text editor and compiled in gcc.