MAKE FILE

"make" is a command taht you can use to make and run scripts from text files..

http://www.opussoftware.com/tutorial/TutMakefile.htm

this link explains how to use the "make" command

Want to Learn LINUX

Nowadays many people use linux operating system. Linux is open source i.e. its source code is open for every person. This site contains all the files, data structures and modules that can help you in understanding linux better. Over the years many amendments have been made to this operating system.

http://www.raspberryginger.com/jbailey/minix/html/files.html

Ns2 turorial

NS is simulator for networks. Using NS you can simulate all the existing networking, transport and application layer protocols. you can also embed your own protocol and simulate that as well. e.g You can simulate and compare the results between TCP and UDP protocols any kind of network topology that u want to generate.

Here is a link to a tutorial of NS by Marc Gries:: http://www.isi.edu/nsnam/ns/tutorial/.