Check out this super cool UNIX command line visual cheat sheet:
http://www.fermbyg.dk/Prohest/nix/img/Unix..._structures.gif

I like it, although it has some quirks ("balt" instead of "halt")

EDIT #1: Adding another one (not a visual one though, but still a cheat sheet), it's a hotlink to a PDF:
http://fosswire.com/wp-content/uploads/2007/08/fwunixref.pdf

EDIT #2: This article is reprinted from "The Official Ubuntu Book". While the cheat sheet is specific for Ubuntu Linux, most commands will work with other Linux distributions as well:
http://www.computerworld.com/action/articl...mp;pageNumber=1

EDIT #3: This one also provides links to online man pages:
http://www.debianadmin.com/basic-linux-com...-man-pages.html

EDIT #4: Ubuntu Quick Reference (hotlink to a PDF):
http://tux.fau.edu/index.php?action=dlatta...=111.0;attach=9

EDIT #5: 10 Linux commands you've never used - a must read in my opinion:
http://bashcurescancer.com/10-linux-comman...never-used.html

EDIT #6: This is a linux command line reference for common operations:
http://www.pixelbeat.org/cmdline.html

This post has been edited by dserban: Aug 15 2007, 02:21 PM

Thanks for the info. You are right, this visual way of displaying a lot of info is very nice.
I found another "almost false" thing : if you look at "login" you see "Prints password", which is obviously false : "login" asks you your user name, probably followed by your password, in order to let you log in !

Interesting, never knew people could list the commands that way. I think it's easier to learn the commands this way.

xboxrulz