This book is excellent:

Sams Teach Yourself Shell Programming in 24 Hours (2nd Edition)
http://www.amazon.com/exec/obidos/AS...089820-6681729

It received good reviews. Here's my personal review from Amazon.com:

This is probably one of the best books by Sams that I've read. If you want to start shell programming, you've picked up the perfect book, even if you're new to Unix. It starts off by first getting you familiar with the basic Unix commands: ls, pwd, cp, mv, cat, etc. and telling you the basics of Unix and Shells. Then it goes over file systems and modifying attributes. Later when you're comfortable, it holds your hand through the shell programming syntax, logic, substititution, regular expressions, and essential tools such as awk and sed. This book contains other gems and snippets that have helped me through many projects. Overall good buy

If you want to learn Perl, I suggest "Beginning Perl by Simon Cozens, Peter Wainwright."
http://www.amazon.com/exec/obidos/tg...81729?v=glance

I prefer Wrox books over O'Reilly because Wrox tends to be more down to earth and friendlier when learning the material. O'Reilly books on the other hand, aren't as so... however they make good references. Also, most of the time Wrox books have more pages for the same price and are more visual (Wrox books contain more screenshots). In all the O'Reilly books that I've seen, most of it is text, and use very little diagrams.

The SAMS TYS in (blank) are alright.
But Simon Cozens over Oreilly on Perl, I don't know about that! I guess you get what you pay for.
It clearly states in the camel book that Perl can be hard to learn at first.

I tend to like the o'reily books because even though they aren't very down to earth, they are like reading other books ver batim.

Thanks, really like this ebook...

Thank you This is good stuff

This is gonna sound terrible, but Google. I did most of my learning in google, but that is primarily for syntax, if you know how to program but don't know the syntax, then simply search what you're trying to do (I'm sure it's probably the worst way to learn, but I get board reading books like that, I just need specific information and Google can get that to me quickly), Then again that works well for the ADD person who can't sit down and actually read a book like that..

CGI/Perl By Diane Zak is what I used to learn Perl. It's a pretty good book.

I did study CGI/Perl By Diane Zak; its pretty decent book, even newbies can learn easily after reading this book.