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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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Find broken symlinks and delete them
recursively deletes all broken symlinks using zsh globbing syntax.

What is my ip?

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"

history autocompletion with arrow keys
This will enable the possibility to navigate in the history of the command you type with the arrow keys, example "na" and the arrow will give all command starting by na in the history.You can add these lines to your .bashrc (without &&) to use that in your default terminal.

Search and replace text in all php files with ruby
Search for the string "search" and replace it with the string "replace", on all files with the extension php in the curret folder. Do also a backup of each file with the extension "bkp".

Check whether laptop is running on battery or cable
In my case it was actually like this...

Change active bond slave
This forces a bonded interface to switch to another slave in the bond as its active slave.

check open ports without netstat or lsof

find and delete empty dirs, start in current working dir

remove oprhan package on debian based system


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