What is the group "adm" and for what it's use? and what are the differences form the group "admin"?

1 Answer 1


adm: Group adm is used for system monitoring tasks. Members of this group can read many log files in /var/log, and can use xconsole. Historically, /var/log was /usr/adm (and later /var/adm), thus the name of the group.

admin: The admin group is used to grant sudo access on ubuntu 11.10 and earlier. It's still found on 12.04 for backwards compatibility.

  • 2
    What group replaced "admin"? Commented Aug 24, 2020 at 16:38
  • 3
    @JamesBowery "sudo", I believe, from inspecting an Ubuntu 20.04 system.
    – Arnon
    Commented Oct 9, 2020 at 1:08

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