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diff --git a/man/systemd.timer.xml b/man/systemd.timer.xml new file mode 100644 index 0000000000..6fc26a5536 --- /dev/null +++ b/man/systemd.timer.xml @@ -0,0 +1,192 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + +<!-- + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +--> + +<refentry id="systemd.timer"> + <refentryinfo> + <title>systemd.timer</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.timer</refentrytitle> + <manvolnum>5</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd.timer</refname> + <refpurpose>Timer unit configuration</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd.timer</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para>A unit configuration file whose name ends in + <filename>.timer</filename> encodes information about + a timer controlled and supervised by systemd, for + timer-based activation.</para> + + <para>This man page lists the configuration options + specific to this unit type. See + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for the common options of all unit configuration + files. The common configuration items are configured + in the generic [Unit] and [Install] sections. The + timer specific configuration options are configured in + the [Timer] section.</para> + + <para>For each timer file, a matching unit file must + exist, describing the unit to activate when the timer + elapses. By default, a service by the same name as the + timer (except for the suffix) is activated. Example: a + timer file <filename>foo.timer</filename> activates a + matching service <filename>foo.service</filename>. The + unit to activate may be controlled by + <varname>Unit=</varname> (see below).</para> + + <para>Unless <varname>DefaultDependencies=</varname> + is set to <option>false</option>, timer units will + implicitly have dependencies of type + <varname>Conflicts=</varname> and + <varname>Before=</varname> on + <filename>shutdown.target</filename>. These ensure + that timer units are stopped cleanly prior to system + shutdown. Only timer units involved with early boot or + late system shutdown should disable this + option.</para> + </refsect1> + + <refsect1> + <title>Options</title> + + <para>Timer files must include a [Timer] section, + which carries information about the timer it + defines. The options specific to the [Timer] section + of timer units are the following:</para> + + <variablelist> + <varlistentry> + <term><varname>OnActiveSec=</varname></term> + <term><varname>OnBootSec=</varname></term> + <term><varname>OnStartupSec=</varname></term> + <term><varname>OnUnitActiveSec=</varname></term> + <term><varname>OnUnitInactiveSec=</varname></term> + + <listitem><para>Defines timers + relative to different starting points: + <varname>OnActiveSec=</varname> defines a + timer relative to the moment the timer + itself is + activated. <varname>OnBootSec=</varname> + defines a timer relative to when the + machine was booted + up. <varname>OnStartupSec=</varname> + defines a timer relative to when + systemd was + started. <varname>OnUnitActiveSec=</varname> + defines a timer relative to when the + unit the timer is activating was last + activated. <varname>OnUnitInactiveSec=</varname> + defines a timer relative to when the + unit the timer is activating was last + deactivated.</para> + + <para>Multiple directives may be + combined of the same and of different + types. For example, by combining + <varname>OnBootSec=</varname> and + <varname>OnUnitActiveSec=</varname> it is + possible to define a timer that + elapses in regular intervals and + activates a specific service each + time.</para> + + <para>The arguments to the directives + are time spans configured in + seconds. Example: "OnBootSec=50" means + 50s after boot-up. The argument may + also include time units. Example: + "OnBootSec=5h 30min" means 5 hours and 30 + minutes after boot-up. For details + about the syntax of time spans see + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> + + <para>If a timer configured with + <varname>OnBootSec=</varname> or + <varname>OnStartupSec=</varname> is + already in the past when the timer + unit is activated, it will immediately + elapse and the configured unit is + started. This is not the case for + timers defined in the other + directives.</para></listitem> + + <para>These are monotonic timers, + independent of wall-clock time and timezones. If the + computer is temporarily suspended, the + monotonic clock stops too.</para> + + </varlistentry> + <varlistentry> + <term><varname>Unit=</varname></term> + + <listitem><para>The unit to activate + when this timer elapses. The argument is a + unit name, whose suffix is not + <filename>.timer</filename>. If not + specified, this value defaults to a + service that has the same name as the + timer unit, except for the + suffix. (See above.) It is recommended + that the unit name that is activated + and the unit name of the timer unit + are named identically, except for the + suffix.</para></listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |