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
lp::7:daemon,lp
mem::8:
kmem::9:
wheel::10:root
icmp::11:
mail::12:mail
news::13:news
uucp::14:uucp
man::15:
ttyS::16:
proc::17:
floppy::19:
games::20:
slocate::21:
utmp::22:
audio::23:
console::31:
dip::40:
ftp::50:
http::51:
nobody::99:
users::1000: