mirror of
https://github.com/systemd/systemd
synced 2024-09-06 16:56:43 +00:00
![Zbigniew Jędrzejewski-Szmek](/assets/img/avatar_default.png)
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
149 lines
5.5 KiB
XML
149 lines
5.5 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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-->
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<refentry id="systemd-sysusers"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-sysusers</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-sysusers</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-sysusers</refname>
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<refname>systemd-sysusers.service</refname>
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<refpurpose>Allocate system users and groups</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-sysusers</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="repeat"><replaceable>CONFIGFILE</replaceable></arg>
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</cmdsynopsis>
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<para><filename>systemd-sysusers.service</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-sysusers</command> creates system users and
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groups, based on the file format and location specified in
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<citerefentry><refentrytitle>sysusers.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>If invoked with no arguments, it applies all directives from all files
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found in the directories specified by
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<citerefentry><refentrytitle>sysusers.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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When invoked with positional arguments, if option
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<option>--replace=<replaceable>PATH</replaceable></option> is specified, arguments
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specified on the command line are used instead of the configuration file
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<replaceable>PATH</replaceable>. Otherwise, just the configuration specified by
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the command line arguments is executed. The string <literal>-</literal> may be
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specified instead of a filename to instruct <command>systemd-sysusers</command>
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to read the configuration from standard input. If only the basename of a file is
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specified, all configuration directories are searched for a matching file and
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the file found that has the highest priority is executed.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--root=<replaceable>root</replaceable></option></term>
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<listitem><para>Takes a directory path as an argument. All
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paths will be prefixed with the given alternate
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<replaceable>root</replaceable> path, including config search
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paths. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--replace=<replaceable>PATH</replaceable></option></term>
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<listitem><para>When this option is given, one ore more positional arguments
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must be specified. All configuration files found in the directories listed in
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<citerefentry><refentrytitle>sysusers.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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will be read, and the configuration given on the command line will be
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handled instead of and with the same priority as the configuration file
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<replaceable>PATH</replaceable>.</para>
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<para>This option is intended to be used when package installation scripts
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are running and files belonging to that package are not yet available on
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disk, so their contents must be given on the command line, but the admin
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configuration might already exist and should be given higher priority.
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</para>
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<example>
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<title>RPM installation script for radvd</title>
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<programlisting>echo 'u radvd - "radvd daemon"' | \
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systemd-sysusers --replace=/usr/lib/sysusers.d/radvd.conf -</programlisting>
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<para>This will create the radvd user as if
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<filename>/usr/lib/sysusers.d/radvd.conf</filename> was already on disk.
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An admin might override the configuration specified on the command line by
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placing <filename>/etc/sysusers.d/radvd.conf</filename> or even
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<filename>/etc/sysusers.d/00-overrides.conf</filename>.</para>
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<para>Note that this is the expanded from, and when used in a package, this
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would be written using a macro with "radvd" and a file containing the
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configuration line as arguments.</para>
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</example>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--inline</option></term>
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<listitem><para>Treat each positional argument as a separate configuration
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line instead of a file name.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure code
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otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sysusers.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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