systemd/man/systemd-inhibit.xml
2014-02-20 22:43:27 -05:00

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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">
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<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="http://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="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><refentrytitle>wodim</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
and inhibits system sleeping, shutdown and idle while
doing so.</para>
</refsect1>
<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>