man/systemd.scope.xml

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   7 This file is part of systemd.
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   9 Copyright 2013 Zbigniew Jędrzejewski-Szmek
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  24
  25 <refentry id="systemd.scope">
  26   <refentryinfo>
  27     <title>systemd.scope</title>
  28     <productname>systemd</productname>
  29
  30     <authorgroup>
  31       <author>
  32         <contrib>Developer</contrib>
  33         <firstname>Lennart</firstname>
  34         <surname>Poettering</surname>
  35         <email>lennart@poettering.net</email>
  36       </author>
  37     </authorgroup>
  38   </refentryinfo>
  39
  40   <refmeta>
  41     <refentrytitle>systemd.scope</refentrytitle>
  42     <manvolnum>5</manvolnum>
  43   </refmeta>
  44
  45   <refnamediv>
  46     <refname>systemd.scope</refname>
  47     <refpurpose>Scope unit configuration</refpurpose>
  48   </refnamediv>
  49
  50   <refsynopsisdiv>
  51     <para><filename><replaceable>scope</replaceable>.scope</filename></para>
  52   </refsynopsisdiv>
  53
  54   <refsect1>
  55     <title>Description</title>
  56
  57     <para>Scope units are not configured via unit configuration files,
  58     but are only created programmatically using the bus interfaces of
  59     systemd. They are named similar to filenames. A unit whose name
  60     ends in <literal>.scope</literal> refers to a scope unit. Scopes
  61     units manage a set of system processes. Unlike service units, scope
  62     units manage externally created processes, and do not fork off
  63     processes on its own.</para>
  64
  65     <para>The main purpose of scope units is grouping worker processes
  66     of a system service for organization and for managing resources.</para>
  67
  68     <para><command>systemd-run <option>--scope</option></command> may
  69     be used to easily launch a command in a new scope unit from the
  70     command line.</para>
  71
  72     <para>See the <ulink
  73     url="http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/">New
  74     Control Group Interfaces</ulink> for an introduction how to make
  75     use of scope units from programs.</para>
  76
  77     <para>Unless <varname>DefaultDependencies=false</varname>
  78     is used, scope units will implicitly have dependencies of
  79     type <varname>Conflicts=</varname> and
  80     <varname>Before=</varname> on
  81     <filename>shutdown.target</filename>. These ensure
  82     that scope units are removed prior to system
  83     shutdown. Only scope units involved with early boot or
  84     late system shutdown should disable this option.
  85     </para>
  86   </refsect1>
  87
  88   <refsect1>
  89     <title>See Also</title>
  90     <para>
  91       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  92       <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  93       <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  94       <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  95       <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  96       <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
  97     </para>
  98   </refsect1>
  99
 100 </refentry>