Find Useful One Line Command Line Code
Some people like to use the command line all the time. There are a lot of cool tricks that can make using the command line better than the standard UI interface.
commandlinefu.com has a large library of one line commands to show you the power of the command line. You can browse around the front page, or simply search for something you need.
For example, did you know there's a command-line script to help you generate more secure passwords? There's also a command to make your terminal display like the Matrix.
Not all commands will work on all UNIX environments, but they should give you a clue to how to make it work on your system.
commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed, and voted up or down.