Couple days ago I was learning UNIX commands. I found some cool sites that provides unix commands for beginners. I tried to add some best site for learning Unix. Enjoy and let me know if you know some cool site like this.
1. From Harvard Mathematics Department :
http://www.math.harvard.edu/computing/unix/unixcommands.html
2. From Unix Tool Box : Here is a cool Cheat sheet for Unix commands from Unix toolbox
http://cb.vu/unixtoolbox.xhtml
3. And One of the Best is Learn Unix In Ten Minutes :
http://freeengineer.org/learnUNIXin10minutes.html
4. And Here is a Unix/ Linus command Reference Cheat sheet from Fosswire.com . Check the link below to download the Unix command cheat sheet as PDF file for your everyday use.
http://fosswire.com/post/2007/08/unixlinux-command-cheat-sheet/