Saw a little snippit from a book on bash scripting.


***bash Quick Reference (PDF)
Publisher: O'Reilly
ISBN: 0596527764
In this quick reference, you'll find everything you need to know about the bash shell. Whether you print it out or read it on the screen, this PDF gives you answers to annoying questions that come up when you're writing shell scripts: What characters do you need to quote? How do you get variable substitution to do exactly what you want? How do you use arrays?

http://www.oreilly.com/catalog/bashqr/