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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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Generate a random password 30 characters long

sort list of email addresses by domain.tld
email random list can be created here: https://www.randomlists.com/email-addresses

Recursively remove .svn directories

Compare two directory trees.
This uses Bash's "process substitution" feature to compare (using diff) the output of two different process pipelines.

Blank/erase a DVD-RW

Follow the flow of a log file
tailf same as tail -f follow the flow of a log file, showing it in real time to stdout.

Given process ID print its environment variables
Same as previous but without fugly sed =x

Give to anyone a command to immediatly find a particular part of a man.
Example : $ LC_ALL=C man less | less +/ppattern

Move files around local filesystem with tar without wasting space using an intermediate tarball.

Print macOS current power delivery max wattage
Print the max wattage of the current power draw source for a Mac. Note that the current amount of watts drawn may be lower, particularly if a high-wattage adapter is plugged into a Mac that has a full battery.


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