root:*:0:
daemon:*:1:
bin:*:2:
sys:*:3:
adm:*:4:
tty:*:5:
disk:*:6:
lp:*:7:
mail:*:8:
news:*:9:
uucp:*:10:
man:*:12:
proxy:*:13:
kmem:*:15:
dialout:*:20:user,messagebus,root,developer
fax:*:21:
voice:*:22:
cdrom:*:24:
floppy:*:25:
tape:*:26:
sudo:*:27:
audio:*:29:user,pulse,root,developer
dip:*:30:
www-data:*:33:
backup:*:34:
operator:*:37:
list:*:38:
irc:*:39:
src:*:40:
gnats:*:41:
shadow:*:42:
utmp:*:43:
video:*:44:user,root,developer
sasl:*:45:
plugdev:*:46:
staff:*:50:
games:*:60:
users:*:29999:developer
spool:*:65100:
nogroup:*:65534:
libuuid:x:100:
messagebus:x:30000:
haldaemon:x:30001:
powerdev:x:30002:
pulse:x:669:
pulse-access:x:670:user,root,developer
pulse-rt:x:671:
rtcom:x:672:
ssh:x:30003:
avahi:x:30004:
netdev:x:30005:
developer:x:30006:

user@Nookie:~$ grep user /etc/group
dialout:*:20:user,messagebus,root
audio:*:29:user,pulse,root
video:*:44:user,root
users:*:29999:
pulse-access:x:670:user,root