NS2 INSTALLATION ON LINUX

1) Download 'ns-allinone-2.35' from :
  http://sourceforge.net/projects/nsnam/files/allinone/ns-allinone-2.35/ns-allinone-2.35.tar.gz/download

2) Extract the downloaded zip file 'ns-allinone-2.35.tar.gz file' to desktop.

3) Now you need to download some essential packages for ns2,these packages can be downloaded by using the following command : applications>accessories>terminal or dashhome>trminal
then type the below line on the terminal window

            "sudo apt-get install build-essential autoconf automake libxmu-dev libtool gcc"

    or type this command

       "sudo apt-get install autoconf automake gcc g++ build-essential libxmu-dev libtool libxt-dev"

4) Now change your directory(here i have already extracted the downloaded files to desktop,so my location is desktop) type the following codes in the command window to install NS2.

                                            cd Desktop  
                                            cd ns-allinone-2.35
                                            ./install

                              The installation procedure will take a few minutes..........

5) After compleating the installation type the following command in the command window

                                            gedit ~/.bashrc

6) Now an editor window appears,please copy and paste the follwing codes in the end of the text file (note that '/home/abhiram/Desktop/ns-allinone-2.35/octl-1.14' in each line in the below code should be replaced with your location where the 'ns-allinone-2.35.tar.gz'file is extracted)

 
# LD_LIBRARY_PATH
OTCL_LIB=/home/abhiram/Desktop/ns-allinone-2.35/otcl-1.14
NS2_LIB=/home/abhiram/Desktop/ns-allinone-2.35/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB

# TCL_LIBRARY
TCL_LIB=/home/abhiram/Desktop/ns-allinone-2.35/tcl8.5.10/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB

# PATH
XGRAPH=/home/abhiram/Desktop/ns-allinone-2.35/bin:/home/abhiram/Desktop/ns-allinone-2.35/tcl8.5.10/unix:/home/abhiram/Desktop/ns-allinone-2.35/tk8.5.10/unix
NS=/home/abhiram/Desktop/ns-allinone-2.35/ns-2.35/
NAM=/home/abhiram/Desktop/ns-allinone-2.35/nam-1.15/
PATH=$PATH:$XGRAPH:$NS:$NAM

7) Save and close the text editor and then type the following command on the terminal

                                                 source ~/.bashrc

8) Close the terminal window and start a new terminal window and now change the directory to ns-2.35 and validate ns-2.35 by exicuting the following command ( it takes 30 to 45 minutes)

                                                   cd ns-2.35
                                                   ./validate

9) If the installation is successful, then you will be able to see % at the command prompt while typing the following command

                                                    ns

10) Now type

                                                    exit