2010-07-02 00:55:34 +00:00
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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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2015-05-27 09:38:19 +00:00
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
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<!ENTITY % entities SYSTEM "custom-entities.ent" >
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%entities;
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]>
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2010-07-02 00:55:34 +00:00
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<!--
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-11 22:20:58 +00:00
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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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2010-07-02 00:55:34 +00:00
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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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2012-04-11 22:20:58 +00:00
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Lesser General Public License for more details.
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2010-07-02 00:55:34 +00:00
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2012-04-11 22:20:58 +00:00
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You should have received a copy of the GNU Lesser General Public License
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2010-07-02 00:55:34 +00:00
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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.target">
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2015-02-04 02:14:13 +00:00
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<refentryinfo>
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<title>systemd.target</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.target</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd.target</refname>
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<refpurpose>Target unit configuration</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename><replaceable>target</replaceable>.target</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>A unit configuration file whose name ends in
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<literal>.target</literal> encodes information about a target unit
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of systemd, which is used for grouping units and as well-known
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synchronization points during start-up.</para>
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<para>This unit type has no specific options. See
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for the common options of all unit configuration files. The common
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configuration items are configured in the generic [Unit] and
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[Install] sections. A separate [Target] section does not exist,
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since no target-specific options may be configured.</para>
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<para>Target units do not offer any additional functionality on
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top of the generic functionality provided by units. They exist
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merely to group units via dependencies (useful as boot targets),
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and to establish standardized names for synchronization points
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used in dependencies between units. Among other things, target
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units are a more flexible replacement for SysV runlevels in the
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classic SysV init system. (And for compatibility reasons special
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target units such as <filename>runlevel3.target</filename> exist
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which are used by the SysV runlevel compatibility code in systemd.
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See
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<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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for details).</para>
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<para>Unless <varname>DefaultDependencies=</varname> is set to
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<option>false</option>, target units will implicitly complement
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all configured dependencies of type <varname>Wants=</varname>,
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<varname>Requires=</varname>,
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<varname>RequiresOverridable=</varname> with dependencies of type
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<varname>After=</varname> if the units in question also have
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<varname>DefaultDependencies=true</varname>.
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</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>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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</para>
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</refsect1>
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2010-07-02 00:55:34 +00:00
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</refentry>
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