Commandlinefu.com is an online repository for recording commandline gems, that you return to again and again.
'fu' is a commandline interface that allows you to harvest the power of internets commandline wisdom.
Now you can search this trove of online treasures from the comfort of your commandline . For example ...
So you searched commandlinefu.com for for "query wikipedia" above.
Now lets say we want try out that first command
And with a little ⌘-V (Mac) or Ctrl-V or Shift-Insert, you can paste your query into the terminal, and voilà!
And if you are curious about others think about that command you can learn more by reading the associated comments in a browser...
For more information check out the wiki!