$ chgrp sane_c_devs /usr/bin/gcc $ chmod 0770 /usr/bin/gcc Of course, the following scenario is not impossible ;) $ getent group sane_c_devs | cut -d:

$ chgrp sane_c_devs /usr/bin/gcc $ chmod 0770 /usr/bin/gcc Of course, the following scenario is not impossible ;) $ getent group sane_c_devs | cut -d: -f4 | tr , "\n" | wc -l 0