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Export MySQL tables that begin with a string

Find biggest 10 files in current and subdirectories and sort by file size

Length of longest line of code
Here's an awk version.

ignore .DS_Store forever in GIT
With a couple of little commands, you?ll be able to ignore the .DS_Store files forever from your git repositories on mac! The following command will add the .gitignore file to the git configuration git config --global core.excludesfile ~/.gitignore then, the following, will add the .DS_Store to the list echo .DS_Store >> ~/.gitignore

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"

reverse order of file

dump database from postgresql to a file

dd if=/dev/null of=/dev/sda
removes all files/filesystems of a harddisk. It removes EVERYTHING of your hard disk. Be carefull when to select a device. It does not prompt for and second check.

Short URLs with is.gd
No curl and no sed, just wget :)

Simple MAC Changeing
The 00:11:22:33:44:55 is whatever you want your new MAC address to be. Sometimes sudo should be used in front if you need to.


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