connects to all the screen instances running.

This command puts all the flags of the USE variable actually used by the packages you emerged to the file "use", and those which are unused but available to the file "notuse"

If you're like me and want to keep all your music rated, and you use xmms2, you might like this command.

I takes 10 random songs from your xmms2 library that don't have any rating, and adds them to your current playlist. You can then rate them in another xmms2 client that supports rating (I like kuechenstation).

I'm pretty sure there's a better way to do the grep ... | sed ... part, probably with awk, but I don't know awk, so I'd welcome any suggestions.

Greps located files for an expression.

Example greps all LaTeX files for 'foo':

To avoid searching thousands of files with grep it could be usefull to test first how much files are returned by locate:

When you fill a formular with Firefox, you see things you entered in previous formulars with same field names. This command list everything Firefox has registered. Using a "delete from", you can remove anoying Google queries, for example ;-)

Extracted from http://www.howtogeek.com/wiki/Recursively_Add_Changed_Files_to_Subversion

This is useful for remove all packages that are part of a common suite.

This is a simple command, but extremely useful. It's a quick way to search the file names in the current directory for a substring. Normally people use "ls *term*" but that requires the stars and is not case insensitive. Color (for both ls and grep) is an added bonus.

Lists the local files that are not present in the remote repository (lines beginning with ?)

and add them.

Usage:

Declare this function in your Shell, then use it like this:

The script will search for the 'foo' pattern in your current xmms2 playlist (artist or songname), and play the first occurence of it !

Get the svn info, grep for the "URL" of the repository, pull out the tag/branch/trunk, and then just show the helpful/meaningful bit.

Linux : these script enable you to edit multiple files and remove exact phrase from multiple files

Replace "en1" with your network interface (on OS X, usually en0, en1, eth0, etc..)

get cpu info from dmesg

After seeing the command you wish to repeat, just invoke it using the ! syntax.

Shows all linked file and destinations. The 'ls -l' command lists the files in long (1 file per line) format, and the grep command displays only those lines that starts with an l (lower case L) -- a linked file.

Updated: Remove reference to hard links because this command does not apply to hard link as others kindly pointed out.

Reads a username from

You can use this to loop any command to periodically see the output.

Alternatively, you can put it in a simple shell script to save typing!

#/!bin/bash

while true; do $1; sleep $2; done;

I used this to confirm an upgrade to an SSH daemon was successful