does a command exist to add users to more than one group?
i think the usermod command can do this but i'm not really sure. past ways of me doing this has always been to just hack the /etc/group file and put the user in whatever group i need him to be in. however, vi..ing files like /etc/groups or /etc/passwd is something i really dont like doing nor do i like anyone else doing. so, any ideas?
also, his there a command to list the users in a group?