From: giggzounet <giggzounet at gmail.com> > I'm totally new with centos...we have a cluster in our labo with centos > oscar. The gcc which was provided with the release is gcc41 and > gfortran41. There are packages for gcc44 and gfortran44. I have > installed them. > But the gcc is not a link to gcc41 or gcc44. it is just an executable. > idem for gfortran. So which is the good way on centOS to choose the > gcc44 and gfortran44 per default. Are you sure you did not update the packages instead of install...? To list the packages files : rpm -ql PACKAGENAME And check what is where... JD