systemd/man/systemd-inhibit.xml
Lennart Poettering 818bf54632 tree-wide: drop 'This file is part of systemd' blurb
This part of the copyright blurb stems from the GPL use recommendations:

https://www.gnu.org/licenses/gpl-howto.en.html

The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.

hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
2018-06-14 10:20:20 +02:00

168 lines
5.6 KiB
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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
SPDX-License-Identifier: LGPL-2.1+
Copyright 2012 Lennart Poettering
-->
<refentry id="systemd-inhibit"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-inhibit</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-inhibit</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-inhibit</refname>
<refpurpose>Execute a program with an inhibition lock taken</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> <arg>COMMAND</arg> <arg choice="opt" rep="repeat">ARGUMENTS</arg></command>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-inhibit <arg choice="opt" rep="repeat">OPTIONS</arg> --list</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-inhibit</command> may be used to execute a
program with a shutdown, sleep, or idle inhibitor lock taken. The
lock will be acquired before the specified command line is
executed and released afterwards.</para>
<para>Inhibitor locks may be used to block or delay system sleep
and shutdown requests from the user, as well as automatic idle
handling of the OS. This is useful to avoid system suspends while
an optical disc is being recorded, or similar operations that
should not be interrupted.</para>
<para>For more information see the <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
Lock Developer Documentation</ulink>.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>--what=</option></term>
<listitem><para>Takes a colon-separated list of one or more
operations to inhibit:
<literal>shutdown</literal>,
<literal>sleep</literal>,
<literal>idle</literal>,
<literal>handle-power-key</literal>,
<literal>handle-suspend-key</literal>,
<literal>handle-hibernate-key</literal>,
<literal>handle-lid-switch</literal>,
for inhibiting reboot/power-off/halt/kexec,
suspending/hibernating, the automatic idle detection, or the
low-level handling of the power/sleep key and the lid switch,
respectively. If omitted, defaults to
<literal>idle:sleep:shutdown</literal>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--who=</option></term>
<listitem><para>Takes a short, human-readable descriptive
string for the program taking the lock. If not passed,
defaults to the command line string.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--why=</option></term>
<listitem><para>Takes a short, human-readable descriptive
string for the reason for taking the lock. Defaults to
"Unknown reason".</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--mode=</option></term>
<listitem><para>Takes either <literal>block</literal> or
<literal>delay</literal> and describes how the lock is
applied. If <literal>block</literal> is used (the default),
the lock prohibits any of the requested operations without
time limit, and only privileged users may override it. If
<literal>delay</literal> is used, the lock can only delay the
requested operations for a limited time. If the time elapses,
the lock is ignored and the operation executed. The time limit
may be specified in
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
Note that <literal>delay</literal> is only available for
<literal>sleep</literal> and
<literal>shutdown</literal>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--list</option></term>
<listitem><para>Lists all active inhibition locks instead of
acquiring one.</para></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="no-pager" />
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>Returns the exit status of the executed program.</para>
</refsect1>
<refsect1>
<title>Example</title>
<programlisting># systemd-inhibit wodim foobar.iso</programlisting>
<para>This burns the ISO image
<filename>foobar.iso</filename> on a CD using
<citerefentry project='man-pages'><refentrytitle>wodim</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
and inhibits system sleeping, shutdown and idle while
doing so.</para>
</refsect1>
<xi:include href="less-variables.xml" />
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>