Learning The Terminal commands in Mac OS X

Hello there,

Just to refresh memory thought I would post some quick links to some free/online guides, tutorials and courses.

Hope some of these will become useful to others.

1.UNIX Tips for Mac OS X
http://www.cs.cmu.edu/~benhdj/Mac/unix.html

2.Mac OS X notes
http://www.cs.ucr.edu/~jbyrne/macosx.htm

3. [FAQ] - UNIX basics for newbies
http://www.macosx.com/forums/showthread.php?s=&threadid=7133

4.An A-Z Index of the Apple OS X command line
http://www.ss64.com/osx/

5.Using the shell (Terminal) in Mac OS X
http://aplawrence.com/MacOSX/macosxshell.html

6.UNIX Tutorial for Beginners
http://www.ee.surrey.ac.uk/Teaching/Unix/

7.Basic Unix Commands
http://www.emba.uvm.edu/CF/basic.html

8.Commonly used Unix commands
http://infohost.nmt.edu/tcc/help/unix/unix_cmd.html