Commands by avedis (1)

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Go up multiple levels of directories quickly and easily.
This is a kind of wrapper around the shell builtin cd that allows a person to quickly go up several directories. Instead of typing: cd ../.. A user can type: cd ... Instead of: cd ../../.. Type: cd .... Add another period and it goes up four levels. Adding more periods will take you up more levels.

execute command on all files of certain types excluding folders that match pattern

Find the package that installed a command

Fire CMD every time FILE (or directory) is updated (on *BSD)

Decode base64-encoded file in one line of Perl
Another option is openssl.

Matrix Style
Same as the cool matrix style command ( http://www.commandlinefu.com/commands/view/3652/matrix-style ), except replacing the printed character with randomness. The command mentioned is much faster and thus more true to the matrix. However, mine can be optimized, but I wasted ... i mean spent enough time on it already

Know SELinux status
Usefule to check whether SELinux is in force or disabled. Though you need to be superuser while execute this command.

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"

Find duplicate UID in /etc/passwd
You can use only awk

Show the command line of a process that use a specific port (ubuntu)

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