High speed Internet connection is recommended for faster download and installation.

        On before that you need to install the following packages 
                            yum install autoconf 
                            yum install automake
                            yum install gcc-c++
                            yum install libX11-devel
                            yum install libX-devel
                            yum install libXt-devel
                            yum install libXmu-devel
                            yum install xorg-x11-proto-deve
                            yum update audit   

        First download ns2.34 

        Go to the downloaded location just click ns2.34 and right click extract here 
                                                      or else  
        Go to the terminal just type the following command:

                                   tar -zxvf ns-allinone-2.34.tar.gz

       Go to the folder location where you extract the ns2.34 allinone package in my side i extract in desktop.
       Just  type in the terminal cd ns-allinone-2.34 in this folder you see the one install file. 

        Now type in ./install in the terminal.

        Now it will take 5 to 10 minutes to install  depends upon the your cpu speed after a long time you see the important notice in terminal window.

        Now open a new terminal and type gedit .bashrc a new window will open. under the # .bashrc

                 export PATH=/root/Desktop/ns-allinone-2.34/bin:/root/Desktop/ns-allinone-                                   2.34/tcl8.4.18/unix:/root/Desktop/ns-allinone-2.34/tk8.4.18/unix:$PATH
                export LD_LIBRARY_PATH=/root/Desktop/ns-allinone-2.34/otcl-1.13:/root/Desktop

               export TCL_LIBRARY=/root/Desktop/ns-allinone-2.34/tcl8.4.18/library
               export TK_LIBRARY=/root/Desktop/ns-allinone-2.34/tcl8.4.18/library 

        Just copy and paste  

        With out any space and save then close the window

        Now type the source ~/.bashrc

        You can check what is written in your path by writing

                 echo $PATH 

                echo $TCL_LIBRARY 
                echo $LD_LIBRARY_PATH
                echo $TK_LIBRARY

        Now, the installation has been completed.

        Type the nam command in terminal  the nam window will open.


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