I have installed oneiric ocelot (Ubuntu 11.10). Its "main" repository (which I found in ISO image with Packages.gz name) contains
gfortran but the gfortran command is not working i.e. it is not installed. My assumption is it is not enabled/installed as part of default installation but it is there in the image/iso file of Ubuntu 11.10.
Now I want to find any way to get the
gfortran package from the image, but I doubt my assumption that all software packages which are in main repository will be part of the Ubuntu installation image. Please confirm and explain.