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,…):
Subscribe to the feed for:
The Linux kernel uses unused memory in caches. When you execute "free" you never get the "real" available memory.
Display the amount of memory used by all the httpd processes. Great in case you are being Slashdoted!
slashdot.org webserver adds an X-Bender or X-Fry HTTP header to every response!
Open a ssh session opened forever, great on laptops losing Internet connectivity when switching WIFI spots.