Need a quick reference card? Here you have a list you can choose from:

<img class="size-medium wp-image-118 alignright" src="http://alinuxblog.wordpress.com/files/2008/08/cheatsheets-icon1.gif?w=300" alt="" width="180" height="119" />
<h4>1.<a href="http://www.pixelbeat.org/cmdline.html" target="_blank">Linux Command Line Tips</a></h4>
This is a linux command line reference...

Here are some useful commands that you can use to find (almost) every information that you want to know about your system from the command line. Most of this commands can be run as non-privileged user, but more information can be obtained if (and should be) run as root.:

linux_inside

General system information:

# uname -a

Process information:

# top

(Shift-M to order the list by memory use)
Memory information:...

Here is a tip about how to navigate in GNOME-the fast way. While on the desktop (with no window focused), press the / key to open the Nautilus navigation bar.To navigate to a specific location type the folders path in the bar.Also, you can navigate to the special locations, using the following paths:
<strong>system-settings:///</strong>
Opens the System Settings Window. <a href="http://alinuxblog.wordpress.com/2008/05/16/the-fastest-way-to-navigate-in-gnome/">more...