Execute the most recent command containing search string. This differs from !string as that only refers to the most recent command starting with search string. Show Sample Output

bash neto..

Very basic, but who knows.. mkdir !$ should work too, only uses 'the last' argument. !-2 executes cd Desktop/Notes again. More tips in 'man history' Show Sample Output

Sometimes, you don't really care about all the other information that ifconfig spits at you (however useful it may otherwise be). You just want an IP. This strips out all the crap and gives you exactly what you want. Show Sample Output

I've been using linux for almost a decade and only recently discovered that most terminals like putty, xterm, xfree86, vt100, etc., support hundreds of shades of colors, backgrounds and text/terminal effects. This simply prints out a ton of them, the output is pretty amazing. If you use non-x terminals all the time like I do, it can really be helpful to know how to tweak colors and terminal capabilities. Like: echo $'\33[H\33[2J'

Removes ANSI color and end of line codes to the [{attr1};...;{attrn}m format.

We can list the new disk with fdisk -l

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PS: 'lustatus' gives the list of all alternate boot environments. Show Sample Output

This is an useful command for when your OS is reporting less free RAM than it actually has. In case terminated processes did not free their variables correctly, the previously allocated RAM might make a bit sluggis over time. This command then creates a huge file made out of zeroes and then removes it, thus freeing the amount of memory occupied by the file in the RAM. In this example, the sequence will free up to 1GB(1M * 1K) of unused RAM. This will not free memory which is genuinely being used by active processes.

Yeah I know it's been up here a million times, but this service is a really clean and nice one. Nothing but your IP address on it. Actually I was to write something like this, and noticed this on appspot... ;) Show Sample Output

Sometimes audio and video are not sync'ed. The factor 1.0884 is the quotient 48000/44100. One mplayer plays the audio file in the background, the other the video in the foreground. You can dump the audio file before with another commandlinefu Show Sample Output

On RHEL, Fedora and CentOS systems, and maybe others, the sbin directories aren't in the user's $PATH. For those systems that use 'sudo', this can be inconvenient typing the full path all the time. As a result, you can easily take advantage of adding the sbin directories to your PATH by adding this simple line to you .zshrc.

Add a [fluxbox] binding in your key file then this command provides a dmenu selector for the next track to play

besure to adjust your find to use to correct location of your VMX files. Show Sample Output

The preferred way for scripts (and easier to parse) Show Sample Output

Since coreutils 7.6 provides sort -h Show Sample Output

This is useful for working out whether the file that you are unzipping is an evil zip file which will create 200 new files in your current direction Show Sample Output

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Change to your taste. Much quicker than having to add 'cd' every time. Add it to your .bashrc or .bash_profile.

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.