All commands (14,187)

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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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list files recursively by size

Print IP of any interface. Useful for scripts.

Filter IP's in apache access logs based on use
The first sort is necessary for ips in a list to be actually unique.

Big Countdown Clock with hours, minutes and seconds
Figlet is easy to find for download on the internet, and works for any text. Quite cool.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Getting a domain from url, ex: very nice to get url from squid access.log

Read funny developer comments in the Linux source tree
These are way better than fortune(6).

Decode base64-encoded file in one line of Perl
Another option is openssl.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Compress files in a directory


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