104 lines
4.4 KiB
XML
104 lines
4.4 KiB
XML
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<?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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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-suspend.service">
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<refentryinfo>
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<title>systemd-suspend.service</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-suspend.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-suspend.service</refname>
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<refname>systemd-hibernate.service</refname>
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<refname>systemd-sleep</refname>
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<refpurpose>systemd System Suspend/Hibernate Logic</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-suspend.service</filename></para>
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<para><filename>systemd-hibernate.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-sleep</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-suspend.service</filename> is
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a system service that is pulled in by
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<filename>suspend.target</filename> and is responsible
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for the actual system suspend. Similar,
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<filename>systemd-hibernate.service</filename> is
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pulled in by <filename>hibernate.target</filename> to
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executed the actual hibernation.</para>
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<para>Immediately before entering system suspend and
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hibernation
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<filename>systemd-suspend.service</filename> will run
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all executables in
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<filename>/usr/lib/systemd/system-sleep/</filename>
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and pass two arguments to them. The first argument
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will be "<literal>pre</literal>", the second either
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"<literal>suspend</literal>" or
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"<literal>hibernate</literal>", depending on the chosen
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action. Immediately after leaving system suspend and
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hibernation the same executables are run, but the
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first argument is now "<literal>post</literal>". All
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executables in this directory are executed in
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parallel, and execution of the action is not continued
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before all executables finished.</para>
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<para>Note that scripts or binaries dropped in
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<filename>/usr/lib/systemd/system-sleep/</filename>
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are intended for local use only and should be
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considered hacks. If applications want to be notified
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of system suspend and resume there are much nicer
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interfaces available.</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>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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<citerefentry><refentrytitle>systemd-halt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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