mirror of
https://github.com/systemd/systemd-stable.git
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139 lines
5.4 KiB
XML
139 lines
5.4 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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-->
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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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</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="cat-config" />
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<xi:include href="standard-options.xml" xpointer="no-pager" />
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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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<ulink url="https://systemd.io/UIDS-GIDS">Users, Groups, UIDs and GIDs on systemd systems</ulink>
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</para>
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</refsect1>
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</refentry>
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