LXer: Lazy Linux: 10 Essential Tricks for Admins
 

Published at LXer:

In this article, learn how to be a more productive Linux systems administrator. These 10 essential tricks will lead you on your way to being one powerful Linux systems administrator. Learn about SSH tunnels, VNC, password recovery, console spying, and more. Examples accompany each trick, so you can duplicate them on your own systems.

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Nice, except that Trick #4 doesn't work on all machines..some maintainers have noticed this is a nasty way of gaining root access and actually made it a dead end (if I'm right, Ubuntu would still ask for a password).