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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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Shrink more than one blank lines to one in VIM.

What is the use of this switch ?
Find the usage of a switch with out searching through the entire man page. Usage: manswitch [cmd] [switch] Eg: $manswitch grep silent ____________________________ In simple words $man | grep "\-" Eg: $man grep | grep "\-o" This is not a standard method but works.

list files recursively by size

Colored SVN diff
Simple way to achieve a colored SVN diff

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"

Rename files in batch

list files recursively by size

Display the output of a command from the first line until the first instance of a regular expression.
If BREs can be used, this sed version will also get the job done.

Show all programs on UDP and TCP ports with timer information
-p PID and name of the program -u on a UDP port. -t also TCP ports -o networking timer -n numeric IP addresses (don't resolve them) -a all sockets

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


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