g root 0
g bin 1
g daemon 2
g sys 3
g adm 4
g tty 5
g disk 6
g lp 7
g mem 8
g kmem 9
g wheel 10
g cdrom 11
g mail 12
g man 15
g dialout 18
g floppy 19
g games 20
g tape 33
g video 39
g ftp 50
g lock 54
g audio 63
g users 100
g clock 103
g nobody 65534