First go to the intel web site "http://software.intel.com", click on 'Downloads', click on 'Free Non-commercial Downloads', click on 'accept', click on 'intel fortran compiler professional edition for linux', provide an email address where you will receive the serial number, download the suitable file, for instance 'l_cprof_p_11.0.081.tgz'. On terminal write the following commands and follow the i