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:
You define your variable MYVAR with the desired search pattern:
...which can then be searched with the find command.
This is useful if you in a script, where you want the arguments to be fed into the find command.
The provided search is case insensitive (-iname) and will find all files and directories with the pattern MYVAR (not exact matches). This may go without saying, but if you want exact matches remove the \* and if you want case sensitive, use the -name argument.
The following will take frames starting at 15.2 seconds for a total of 45.9 seconds:
mencoder -ss 15.2 -endpos 30.7 -oac copy -ovc copy mymovie.avi -o myeditedmovie.avi
Keep in mind -endpos is the total time, i.e. the output video in this is 3 minutes 3 seconds in length:
mencoder -ss 1 minute -endpos 2 minutes 3 seconds -oac copy -ovc copy mymovie.avi -o myeditedmovie.avi
Use date to find the date at other days and times.
Other logs can be monitored similarly, e.g.
watch "tail -15 /var/log/daemon.log"