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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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tar+pbzip2 a dir

Display list of available printers

Send apache log to syslog-ng
Send apache log to syslog-ng server without change configuration of syslog. Just add in httpd.conf or vhost conf.

Look at your data as a greymap image.
Keep width to a power of 2 to see patterns emerge. 512 is good. So is 4096 for huge maps. PNM headers are super basic. http://netpbm.sourceforge.net/doc/pbm.html

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Print with tabular

last.fm rss parser
you can just use one awk script to parse the rss feed. No need to pipe so many awk's and sed's. Its ugly and inefficient.

Convert file type to unix utf-8
converts encoding of a file to unix utf-8 useful for data files that contain what would be usable ascii text but are encoded as mpeg or some other encoding that prevents you from doing common manipulations like 'sed'

Save the Top 2500 commands from commandlinefu to a single text file

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"


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