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commandlinefu.com is the place to record those command-line gems that you return to again and again. 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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Your name backwards

See system users

Find the package that installed a command

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Randomize lines in a file
shuf is in the coreutils package

Display current time in requested time zones.
The time zone names come from the tz database which is usually found at /usr/share/zoneinfo.

Tail a log and replace according to a sed pattern
Tails a log and replaces it line-by-line according to whatever you want to replace. Useful if the file writing to the log can't be modified, so you need to modify its output instead.

Record MP3 audio via ALSA using ffmpeg
Record audio to an MP3 file via ALSA. Adjust -i argument according to arecord -l output.

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously


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