0     root
1     bin
2     sys
3     kmem
4     tape
5     tty
6     daemon
7     floppy
8     disk
9     lp
10    dialout
11    audio
12    video
13    utmp
14    clock
15    cdrom
16    adm
17    atd
18    messagebus
19    haldaemon lpadmin
20    named
21    gdm
22    fcron
23    systemd-journal
24    input
25    apache nginx
26    smmsp
27    polkitd
28    rpc
30    courier
31    exim
32    postfix
33    postdrop
34    mail
35    vmailman
36    news
37    kdm
40    mariadb mysql
41    postgres
42    dovecot
43    dovenull
45    ftp
46    proftpd
47    vsftpd
48    rsyncd
50    sshd
51    stunnel
52    dhcpcd pppusers
56    svn
57    svntest
60    games
61    kvm halusers
62    wireshark
64    sddm
65    lightdma
66    monero
70    scanner
71    colord
73    systemd-journal-gateway
74    systemd-journal-remote
75    systemd-journal-upload
76    systemd-network
77    systemd-resolve
78    systemd-timesync
79    systemd-coredump
80    uuidd
81    systemd-oom
83    ldap
84    avahi
86    netdev
87    ntp
88    unbound
90    plugdev
97    wheel
999   users
65534 nogroup