How do the Linux distributions create the Linux user/group "postgres"?

Hello,

Please note: I'm talking about the user and group "postgres" in the
Linux OS and not in the PostgreSQL server.

We're compiling PostgreSQL from source (actually 14.1) and distribute that
to our customers. They're asked to setup user and group "postgres"
before creating the cluster. As nowadays there are a lot of setup such
things in bigger installations, like LDAP or AD, etc. I'd like to know
how other installations for Linux deal with this?

Thanks

    matthias

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Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
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