hello everyone
i m just new to linux programming so i want to know which book or any other medium to learn the programming in linux as it quite different from programming in windows..............

What do you mean programming in linux? If you mean shell scripting, here's a good link:
http://tldp.org/LDP/abs/html/

When I hear "programming in Linux" I think kernel hacking.

The publisher O'Reilly has a number of Linux and UNIX related books, so check out their website. The books are also available free in electronic form (although as separate chapters - I guess to encourage people to buy the dead-tree version).

There are also books which the authors have put out as free electronic files; you may run across them if you happen to search for free books on certain subjects.

What type of programming do you want to do? Some software with a GUI? If so, you need to familiarize yourself with the available widget sets and their good/bad points. For example, you have QT which is freely available on Linux (except I think for commercial non-GPL software) - I have no idea what their license terms are for winduhs. There is also GTK2+ and WxWidgets. If you're coding for, say, KDE only, you can use KDE's extensions to the QT widgets.

I was happy with the following book:

"Beginning Linux Programming" by Neil Mathew and Richard Stones.
Wrox Press.

Which provides strong fundamental on Linux Programming such as
shell, Gtk, qt, mysql, etc

This is a good book for linux programmers

Here's some online books/resources.

http://www.linux.org/docs/online_books.html

http://www.linuxtopia.org/online_books/

Google for "free linux books" and you'll find some more. Also, gnu.org has a few free .pdf books and other online resources you may find useful.

With the exception of X/gui programming, Linux/Unix programming begins and ends with APUE:

http://www.amazon.com/Programming-En.../dp/0201433079