Using UUID to Deal With Disks
UUID notation is one way to access your disks when using Linux. But first you must find the identifier.

Magic Tricks With the Sysreq Key
Remember the Sysreq key? It's in the same spot it's always been. Get reacquainted with it, and rediscover all the useful things it can do.

Proc and Processes
The /proc directory provides a text-based way of interfacing with system settings and processes. Sure, it looks complicated at first glance, but it is incredibly helpful when troubleshooting.

Further Notes on proc
Learn more about proc, how it works and how to get the most out of it.

Monitoring Network Traffic With IPTraf
Check out the traffic passing through your machine with this useful and easy-to-use ncurses-based app.

Cracking Passwords
Find password weaknesses before it's too late. john-the-ripper offers three cracking modes to evaluate passwords.

Command-Line-Fu, Because Knowledge is Power
This social networking site makes broadening your command-line knowledge fun and easy.

fuser, files, and processes
Because sometimes you need to know which process is accessing a particular file or filesystem.

The Various bash Prompts
Most likely, you already have a personalized setting for PS1, the default bash interaction prompt. Here's what to do with PS2, PS3 and PS4.