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:
Say you just typed a long command like this:
rsync -navupogz --delete /long/path/to/dir_a /very/long/path/to/dir_b
but you really want to sync dir_b to dir_a. Instead of rewriting all the command line, just type followed by , and your command line will read
rsync -navupogz --delete /very/long/path/to/dir_b /long/path/to/dir_a
I used this command (in addition to a code formatting tool) to "cleanup" a bunch of PHP files
Instead of zeroing the filesystem, this command overwrites N times (default is 3) the disk content, making data recovery much harder.
The command accepts many more options
Works for multiple hosts (such as www.google.com) and/or wrong hosts.
I make an extensive use of sudo, so I had to exclude the sudo part of the command history