Any Usefull Ebooks on Linux Programming?

Hi Forum!
Is there anybody who can tell me where I can find some cool books on linux ( RH exclusively! if possible ) programming? :stuck_out_tongue:

This book is considerable..

Title: Linux Programming Unleashed, Second Edition
Author: Kurt Wall
Publisher: SAMS
ISBN: 0-672-32021-5

http://www.ercb.com/feature/feature.0056.html

Here is another good one.

LINUX Programmer's Reference by Osbourne.
copyright 1998 (oldie but a goodie!)
ISBN 0-07-882587-3

www.osbourne.com

Also, you can get a great deal at http://www.computerbooksdirect.com/lci/full\_site\_enrollment/fse\_results.jhtml?_requestid=43635