UNIX old jntu question papers

This link directs to a good text book on UNIX named "UNIX NETWORK PROGRAMMING by W.richard stevens".
http://www.net130.com/tutorial/Unix/Unix%20Network%20Programming%20Volume%201,Third%20Edition%20The%20Sockets%20Networking%20API.rar
This book is very important for all jntu cse guys in their cirruculum.
One more book usefull for lab preparation of core unix shell commands is
http://rapidshare.de/files/11937661/0672324903.zip
"UNIX SHELL PROGRAMMING by Patrick wood"