commandlinefu.com is the place to record those command-line gems that you return to again and again.
Delete that bloated snippets file you've been using and share your personal repository with the world. 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.
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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
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Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:
Add this to a fiend's .bashrc.
PROMPT_COMMAND will run just before a prompt is drawn.
RANDOM will be between 0 and 32768; in this case, it'll run about 1/10th of the time.
\033 is the escape character. I'll call it \e for short.
\e7 -- save cursor position.
\e[%d;%dH -- move cursor to absolute position
\e[4%dm \e[m -- draw a random color at that point
\e8 -- restore position.