Can you tell which fortran compiler is installed on your system. If it is gfortran then use: gfortran optical.f -o optical You must know which fortran compiler you are using.
Younas On Sun, Sep 6, 2015 at 7:10 PM, Soumaia Djaadi <[email protected]> wrote: > This is error message : > [dell-inspiron@localhost Optical]$ f77 optical.f -o optical > bash: f77: command not found... > >
