Today is a slight departure from the usual Hack of the Day, as we recommend a site that's bursting with Linux goodness. Bumper Link of the Day, if you will.
If you're an avid user of the Linux command line, this one's for you. A growing collection of handy hints, commandlinefu, makes light work of tricky commands. You can quickly find the top commands or simply browse through the list. There are thousands, so it may take a while.
Naturally, there's a search facility ("grep the archive"), so you should be able to isolate the bits you need. For instance, here's a search of, um, grep itself.
Check out commandlinefu - let us know your favourite commands.
Photo by Stephen Woods