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Re: Why do UID values of system users matter?

From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: Why do UID values of system users matter?
Date 2019-08-19 15:20 +0200
Message-ID <ywPJM-5e4-17@gated-at.bofh.it> (permalink)
References <yvRXj-mJ-9@gated-at.bofh.it> <yvSTn-YA-3@gated-at.bofh.it> <yvWtY-3jD-3@gated-at.bofh.it> <yvXgl-3QP-1@gated-at.bofh.it>
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On Fri, Aug 16, 2019 at 11:03:48PM -0400, Kenneth Parker wrote:
> >From looking at an Ubuntu 16.04 System I administer, User "man" (uid 6) is,
> apparently the owner of /var/cache/man, which appears to be an area for
> translating man pages.  Who creates this User?

I don't know about Ubuntu, because this is debian-user.  In Debian,
the preinst script for the base-passwd package will create a bunch
of system users if /etc/passwd is not present, and groups if /etc/group
is not present.

See /var/lib/dpkg/info/base-passwd.preinst for details.

One might ponder under what conditions, exactly, this script would be
executed while these files are not yet present.  I don't know the inner
workings of the debian-installer, so I'm not sure whether this is just
a safety net, or an expected part of a normal system installation.

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Thread

Why do UID values of system users matter? Steffen Dettmer <steffen.dettmer@gmail.com> - 2019-08-16 23:30 +0200
  Re: Why do UID values of system users matter? Dan Hitt <dan.hitt@gmail.com> - 2019-08-17 00:20 +0200
  Re: Why do UID values of system users matter? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-08-17 00:30 +0200
    Re: Why do UID values of system users matter? Steffen Dettmer <steffen.dettmer@gmail.com> - 2019-08-17 04:20 +0200
      Re: Why do UID values of system users matter? Kenneth Parker <sea7kenp@gmail.com> - 2019-08-17 05:10 +0200
        Re: Why do UID values of system users matter? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-08-19 15:20 +0200
          Re: Why do UID values of system users matter? David Wright <deblis@lionunicorn.co.uk> - 2019-08-19 20:00 +0200
      Re: Why do UID values of system users matter? David Wright <deblis@lionunicorn.co.uk> - 2019-08-17 06:50 +0200
        Re: Why do UID values of system users matter? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-08-19 15:30 +0200
          Re: Why do UID values of system users matter? David Wright <deblis@lionunicorn.co.uk> - 2019-08-19 19:30 +0200
      Re: Why do UID values of system users matter? <tomas@tuxteam.de> - 2019-08-17 10:20 +0200
  Re: Why do UID values of system users matter? David Wright <deblis@lionunicorn.co.uk> - 2019-08-17 06:10 +0200

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