Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
timer specific configuration options are configured in
the [Timer] section.</para>
- <para>For each timer file a matching unit file must
+ <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
+ 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>
<variablelist>
<varlistentry>
- <term><varname>OnActive=</varname></term>
- <term><varname>OnBootup=</varname></term>
- <term><varname>OnStartup=</varname></term>
- <term><varname>OnUnitActive=</varname></term>
- <term><varname>OnUnitInactive=</varname></term>
+ <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>OnActive=</varname> defines a
+ <varname>OnActiveSec=</varname> defines a
timer relative to the moment the timer
itself is
- activated. <varname>OnBootup=</varname>
+ activated. <varname>OnBootSec=</varname>
defines a timer relative to when the
machine was booted
- up. <varname>OnStartup=</varname>
+ up. <varname>OnStartupSec=</varname>
defines a timer relative to when
systemd was
- started. <varname>OnUnitActive=</varname>
+ started. <varname>OnUnitActiveSec=</varname>
defines a timer relative to when the
unit the timer is activating was last
- activated. <varname>OnUnitInactive=</varname>
+ 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
+ combined of the same and of different
types. For example, by combining
- <varname>OnBoot=</varname> and
- <varname>OnUnitActive=</varname> it is
+ <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
<para>The arguments to the directives
are time spans configured in
- seconds. Example: "OnBoot=50" means
+ seconds. Example: "OnBootSec=50" means
50s after boot-up. The argument may
also include time units. Example:
- "OnBoot=5h 30min" means 5 hours and 30
+ "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>OnBootup=</varname> or
- <varname>OnStartup=</varname> is
+ <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
directives.</para></listitem>
<para>These are monotonic timers,
- independant of wall-clock time and timezones. If the
+ independent of wall-clock time and timezones. If the
computer is temporarily suspended, the
monotonic clock stops too.</para>
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
+ 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
- is chosen identical except for the
+ are named identically, except for the
suffix.</para></listitem>
</varlistentry>
</variablelist>
<refsect1>
<title>See Also</title>
<para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <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>
~ianmdlvl / elogind.git / blobdiff