man/systemd-xdg-autostart-generator.xml

   1 <?xml version="1.0"?>
   2 <!--*-nxml-*-->
   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   4   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   5 <!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
   6 <refentry id="systemd-xdg-autostart-generator" conditional="ENABLE_XDG_AUTOSTART">
   7
   8   <refentryinfo>
   9     <title>systemd-xdg-autostart-generator</title>
  10     <productname>systemd</productname>
  11   </refentryinfo>
  12
  13   <refmeta>
  14     <refentrytitle>systemd-xdg-autostart-generator</refentrytitle>
  15     <manvolnum>8</manvolnum>
  16   </refmeta>
  17
  18   <refnamediv>
  19     <refname>systemd-xdg-autostart-generator</refname>
  20     <refpurpose>User unit generator for XDG autostart files</refpurpose>
  21   </refnamediv>
  22
  23   <refsynopsisdiv>
  24     <para><filename>/usr/lib/systemd/user-generators/systemd-xdg-autostart-generator</filename></para>
  25   </refsynopsisdiv>
  26
  27   <refsect1>
  28     <title>Description</title>
  29
  30     <para><filename>systemd-xdg-autostart-generator</filename> is a generator
  31     that creates .service units for
  32     <ulink url="https://specifications.freedesktop.org/autostart-spec/autostart-spec-latest.html">XDG autostart</ulink>
  33     files.
  34     This permits desktop environments to delegate startup of these applications to
  35     <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
  36     .</para>
  37
  38     <para>Units created by <filename>systemd-xdg-autostart-generator</filename>
  39     can be started by the desktop environment using <literal>xdg-desktop-autostart.target</literal>.
  40     See
  41     <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
  42     for more details.</para>
  43
  44     <para>XDG autostart may be conditionalized using both standardized and non-standardized keys.
  45     In order to handle these, the generator may create one or more <varname>ExecCondition=</varname> entries.
  46     For non-standardized keys, well-known helper binaries provided by Desktop Environments are used.
  47     All external helpers <emphasis>must</emphasis> detect their corresponding desktop environment and
  48     <emphasis>must</emphasis> return success when run in a different environment.
  49     This is important as all <varname>ExecCondition=</varname> directives must succeed for an application to be started.</para>
  50
  51     <table>
  52       <title>
  53         Special XDG desktop file entries that are processed
  54       </title>
  55       <tgroup cols='2'>
  56         <colspec colname='entry' />
  57         <colspec colname='handling' />
  58         <thead>
  59           <row>
  60             <entry>Entry</entry>
  61             <entry>Handling</entry>
  62           </row>
  63         </thead>
  64         <tbody>
  65           <row>
  66             <entry><varname>Hidden=</varname>, <varname>X-systemd-skip=</varname></entry>
  67             <entry>No service will be generated if set to true</entry>
  68           </row>
  69           <row>
  70             <entry><varname>OnlyShowIn=</varname>, <varname>NotShowIn=</varname></entry>
  71             <entry><varname>ExecCondition=</varname> using <filename>systemd-xdg-autostart-condition</filename></entry>
  72           </row>
  73           <row>
  74             <entry><varname>TryExec=</varname></entry>
  75             <entry>No service will be generated if the binary does not exist or cannot be executed</entry>
  76           </row>
  77           <row>
  78             <entry><varname>AutostartCondition=</varname> (GNOME extension)</entry>
  79             <entry><varname>ExecCondition=</varname> using <filename>gnome-systemd-autostart-condition</filename></entry>
  80           </row>
  81           <row>
  82             <entry><varname>X-GNOME-Autostart-Phase=</varname></entry>
  83             <entry>No service will be generated if set to any value</entry>
  84           </row>
  85           <row>
  86             <entry><varname>X-KDE-autostart-condition=</varname></entry>
  87             <entry><varname>ExecCondition=</varname> using <filename>kde-systemd-start-condition</filename></entry>
  88           </row>
  89         </tbody>
  90       </tgroup>
  91     </table>
  92
  93     <para><filename>systemd-xdg-autostart-generator</filename> implements
  94     <citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
  95   </refsect1>
  96
  97   <refsect1>
  98     <title>See Also</title>
  99     <para>
 100       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 101       <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 102       <citerefentry><refentrytitle>systemd.target</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 103     </para>
 104   </refsect1>
 105
 106 </refentry>