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Extract raw URLs from a file
you can also use cut instead of awk. less powerful but probably faster. ;)

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"

Pulls total current memory usage, including SWAP being used, by all active processes.

Rename files in batch

To find the LDAP clients connected to LDAP service running on Solaris

convert chinese character into wubi86 input code
This CLI requiere the uniconv package that is provided with the yudit unicode editor . The wubi86 is a way to type chinese far quicker than pinyin . More infor on wikipedia : http://en.wikipedia.org/wiki/Wubizixing , http://www.yale.edu/chinesemac/wubi/xing.html

ps -ef | grep PROCESS | grep -v grep | awk '{print $2}' | xargs kill -9
kills all pids matching the search term of "PROCESS". Be careful what you wish for :)

print crontab entries for all the users that actually have a crontab
This is how I list the crontab for all the users on a given system that actually have a crontab. You could wrap it with a function block and place it in your .profile or .bashrc for quick access. There's prolly a simpler way to do this. Discuss.

Stop Flash from tracking everything you do.
Brute force way to block all LSO cookies on a Linux system with the non-free Flash browser plugin. Works just fine for my needs. Enjoy.

Extract IPv4 addressess from file


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