group

早期freebsd实现

wheel:*:0:root
daemon:*:1:daemon
kmem:*:2:root
sys:*:3:root
tty:*:4:root
operator:*:5:root
bin:*:7:
news:*:8:
wsrc:*:9:
games:*:13:
staff:*:20:root
guest:*:31:root
nobody:*:39:
utmp:*:45:
ingres:*:74:ingres
dialer:*:117:
nogroup:*:32766: