ns3_installation.txt

To install ns3....

1. 
sudo apt-get install aptitude

2. 
sudo aptitude install gcc g++ python python-dev mercurial bzr gdb valgrind gsl-bin libgsl0-dev libgsl0ldbl flex bison tcpdump sqlite sqlite3 libsqlite3-dev libxml2 libxml2-dev libgtk2.0-0 libgtk2.0-dev uncrustify doxygen graphviz imagemagick texlive texlive-latex-extra texlive-generic-extra texlive-generic-recommended texinfo dia texlive texlive-latex-extra texlive-extra-utils texlive-generic-recommended texi2html python-pygraphviz python-kiwi python-pygoocanvas libgoocanvas-dev python-pygccxml

3. 
wget https://www.nsnam.org/release/ns-allinone-3.27.tar.bz2

4. 
tar -xvf ns-allinone-3.27.tar.bz2

5. 
cd ns-allinone-3.27

6. execute each command.....

   ./build.py
   cd ns-3.26
   CXXFLAGS="-O3" ./waf configure
   ./waf -d optimized configure; ./waf
   ./waf --enable-examples configure 
   ./waf --enable-tests configure
   ./test.py

Done!!!