How to Install Network Simulator (NS-2) on Ubuntu - The Easiest Way to Install Ns 2

Installing NS 2 on Ubuntu (any version)

Installing Ns 2 on Ubuntu is a pain in the ass! esp. if you don't know how to give the correct paths.But this method makes it easy to install ns 2 in just a few steps.


Step 1: (Deleting previous installations)

First of all remove any changes to the following files if you made any for ns 2's path:
i.bashrc
ii.profile

You can edit both of them by the following commands:


Bashrc:
$ sudo gedit ~/.bashrc

Profile:
$ sudo ~/.profile


Note: You must enter your root password whenever terminal asks for it.

Step 2: (Exporting PPA Key)

Export the Wouter Horre's PPA repository key by running the following command ,just run it,even if you don't understand it :)

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B3F3334F


Step 3: (Adding Repositories)

Run the following command to edit your Source List:

$ sudo gedit /etc/apt/sources.list

Scroll down to the end of the file.Now add the following PPA Repositories to the Source list,make sure you remove any spaces :


deb http://ppa.launchpad.net/wouterh/ppa/ubuntu karmic main
deb-src http://ppa.launchpad.net/wouterh/ppa/ubuntu karmic main


After entering the repositories,Save the Source List and run the following command :

$ sudo apt-get update


Step 4: (Final Installation)

Run the following command to install Ns 2

$ sudo apt-get install ns nam xgraph


Step 5: (Test)


Run the following command to check your Ns2 instlallation:

$ ns


this should show a "%" on the next line if your installation was succesful.

Thats all you need to do to install NS 2.You don't need to give the paths manually in bashrc or profile.