Useful Links

Unix tutorial introduction: http://www.ee.surrey.ac.uk/Teaching/Unix/unixintro.html

http://www.papermonkey.net/linux/lesson1.html

http://bignosebird.com/unix.shtml 

http://freeengineer.org/learnUNIXin10minutes.html 

http://www.hawaii.edu/itsdocs/cen/unxbasic.pdf 

http://proquest.safaribooksonline.com/book/operating-systems-and-server-administration/unix/0672327643/introduction/pref05

http://drupalize.me/videos/command-line-basics-1-moving-around

http://drupalize.me/videos/command-line-basics-2-copy-move-delete

http://drupalize.me/videos/command-line-basics-3-permissions

http://drupalize.me/videos/command-line-basics-4-zip-and-tar

http://drupalize.me/videos/command-line-basics-5-symbolic-links

http://drupalize.me/videos/command-line-basics-6-ssh-and-scp

http://drupalize.me/videos/command-line-basics-7-finding-files

http://drupalize.me/videos/command-line-basics-8-grep

http://drupalize.me/videos/command-line-basics-9-intro-vivim

http://drupalize.me/videos/command-line-basics-10-editing-vivim

http://drupalize.me/videos/command-line-basics-11-more-editing-vivim

http://drupalize.me/videos/command-line-basics-12-handy-shortcuts