etc/group

   1 root::0:root
   2 bin::1:root,bin,daemon
   3 daemon::2:root,bin,daemon
   4 sys::3:root,bin,adm
   5 adm::4:root,adm,daemon
   6 tty::5:
   7 disk::6:root
   8 lp::7:daemon,lp
   9 mem::8:
  10 kmem::9:
  11 wheel::10:root
  12 icmp::11:
  13 mail::12:mail
  14 news::13:news
  15 uucp::14:uucp
  16 man::15:
  17 ttyS::16:
  18 proc::17:
  19 floppy::19:
  20 games::20:
  21 slocate::21:
  22 utmp::22:
  23 audio::23:
  24 console::31:
  25 dip::40:
  26 ftp::50:
  27 http::51:
  28 nobody::99:
  29 users::1000:
  30 tpexec::65500:
  31 nosock::65501:
  32 nocsock::65502:
  33 nossock::65503:
  34 nofork::65504: