root::0:root
bin::1:root,bin,daemon
daemon::2:root,bin,daemon
sys::3:root,bin,adm 
adm::4:root,adm,daemon
tty::5:
disk::6:root,adm
mem::8:   
kmem::9:
wheel::10:root
floppy::11:root 
uucp::14:uucp
man::15:man
cron::16:root
