root::0:root bin::1:root,bin,daemon daemon::2:root,bin,daemon sys::3:root,bin,adm adm::4:root,adm,daemon tty::5: disk::6:root,adm lp::7:lp mem::8: kmem::9: wheel::10:root floppy::11:root mail::12:mail news::13:news uucp::14:uucp man::15: audio::17: video::18: cdrom::19: games::20: slocate::21: utmp::22: smmsp::25:smmsp mysql::27: rpc::32: sshd::33:sshd gdm::42: shadow::43: ftp::50: pop::90:pop nobody::98:nobody nogroup::99: users::100: console::101: