hello all,
i have fair idea of 'c' programming in windows. Not used to of gcc compiler.
currently i'm doing the CCNA course of cisco at my university. So have fair knowledge of networks too.

I would like to ask that which book should i read first out of the following:
1. Advanced programming in UNIX environment by Richard Stevens.
2. Unix network programming by Richard Stevens.

regards

Well, I would read them in the order you listed them...

Despite the 'advanced' in the title, I have found that the first book is a good introduction to UNIX programming. If you have experience with C then you shall have no problems working through it. It will teach you the specifics you need for working with UNIX.

The second book is of course, focused on network programming, so...

If you have both books, just go ahead and read them both. If you only have the budget for 1, then decide what is more important to you, a broad overview of UNIX programming, or the specifics of network programming.

Hello. You say you have a "fair idea" of c programming in windows. I'd recommend you start with K&R - The C Programming Language. As bulliver said, the books should be read in listing order. I'd also recommend you read the TCP/IP Illustrated 3 volume set by the same author.

P.S.: There is also a "clone" (?) of the first book, might be a bit more up-to-date (but has a downside as the title suggests "Advanced Linux Programming". It's freely available online: http://www.advancedlinuxprogramming.com/