checking version of ns2 installed ubuntu 12.04
 

i installed ns2 using following 4 commands
sudo apt-get update
sudo apt-get install ns2
sudo apt-get install nam
sudo apt-get install tcl
sudo apt-get install xgraph

on ubuntu 12.04

but how to know that which version of ns2 is installed???????

This command will reply with version : $ dpkg-query -s ns2

.. Or you can read about the ns2 package for Ubuntu 12.04 online :
http://packages.ubuntu.com/precise/ns2
. http://packages.ubuntu.com/precise/i386/ns2/filelist

The examples : http://packages.ubuntu.com/precise/ns2-doc
$ sudo apt-get install ns2-doc


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