-floppy:x:7:
-disk:x:8:
-lp:x:9:
-dialout:x:10:
-audio:x:11:
-video:x:12:
-utmp:x:13:
-usb:x:14:
-cdrom:x:15:
-# Used by MTAs (Mail Transport Agents)
-mail:x:30:mail
-# Default group used by some programs that do not require a group.
-nogroup:x:65533:
-# The default GID used by shadow for new users