yes i installed ns-2.35 in ubuntu 12.04 LTS, when i try to install ns-2.33 , i did some changes in my bash.rc file
now problem is ns-2.33 is not installed , leave that problem ,
new problem occured it is,
when i open a new terminal, i am getting first line like basf?bin is a dirctory.
to view my terminal click on below link: