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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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IFS - use entire lines in your for cycles
When you use a "for" construct, it cycles on every word. If you want to cycle on a line-by-line basis (and, well, you can't use xargs -n1 :D), you can set the IFS variable to .

Find the package that installed a command

list block devices
Shows all block devices in a tree with descruptions of what they are.

Find the package that installed a command

Quickly analyze apache logs for top 25 most common IP addresses.
This command is much quicker than the alternative of "sort | uniq -c | sort -n".

ignore hidden directory in bash completion (e.g. .svn)

Generate an XKCD #936 style 4 word password
4 random words are better than one obfuscated word http://xkcd.com/936/

for all who don't have the watch command

Find usb device
I often use it to find recently added ou removed device, or using find in /dev, or anything similar. Just run the command, plug the device, and wait to see him and only him

My random music player
This is my favorite music player I use in my beloved Linux systems,server or desktop Enjoy :-)


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