I have installed package Parallel Studio XE 2013 update1 on my Ubuntu 12.04 system in order to install CMAQ software and IOAPI3.1. But when I type ifort in my terminal it says:
ifort: Command not found.
What should I do to activate my Intel Fortran?

dpkg -L <name-of-the-package>will give you a list of files provided by the package. Check its output (looking especially for files inbindirectories) and paste it in your question. Thanks! – Andrea Corbellini Jan 15 at 22:54