man/systemd-run.xml

   1 <?xml version='1.0'?> <!--*-nxml-*-->
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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   8 Copyright 2013 Zbigniew Jędrzejewski-Szmek
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  23
  24 <refentry id="systemd-run">
  25
  26   <refentryinfo>
  27     <title>systemd-run</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-run</refentrytitle>
  42     <manvolnum>1</manvolnum>
  43   </refmeta>
  44
  45   <refnamediv>
  46     <refname>systemd-run</refname>
  47     <refpurpose>Run programs in transient scope or service units</refpurpose>
  48   </refnamediv>
  49
  50   <refsynopsisdiv>
  51     <cmdsynopsis>
  52       <command>systemd-run</command>
  53       <arg choice="opt" rep="repeat">OPTIONS</arg>
  54       <arg choice="plain"><replaceable>COMMAND</replaceable>
  55       <arg choice="opt" rep="repeat">ARGS</arg>
  56       </arg>
  57     </cmdsynopsis>
  58   </refsynopsisdiv>
  59
  60   <refsect1>
  61     <title>Description</title>
  62
  63     <para><command>systemd-run</command> may be used to create and start
  64     a transient <filename>.service</filename> or a
  65     <filename>.scope</filename> unit and run the specified
  66     <replaceable>COMMAND</replaceable> in it.</para>
  67
  68     <para>If a command is run as transient service unit, it will be
  69     started and managed by the service manager like any other service,
  70     and thus show up in the output of <command>systemctl
  71     list-units</command> like any other unit. It will run in a clean
  72     and detached execution environment. <command>systemd-run</command>
  73     will start the service asynchronously in the background and
  74     immediately return.</para>
  75
  76     <para>If a command is run as transient scope unit, it will be
  77     started directly by <command>systemd-run</command> and thus
  78     inherit the execution environment of the caller. It is however
  79     managed by the service manager similar to normal services, and
  80     will also show up in the output of <command>systemctl
  81     list-units</command>. Execution in this case is synchronous, and
  82     execution will return only when the command finishes.</para>
  83   </refsect1>
  84
  85   <refsect1>
  86     <title>Options</title>
  87
  88     <para>The following options are understood:</para>
  89
  90     <variablelist>
  91       <varlistentry>
  92         <term><option>-h</option></term>
  93         <term><option>--help</option></term>
  94
  95         <listitem><para>Prints a short help
  96         text and exits.</para></listitem>
  97       </varlistentry>
  98
  99       <varlistentry>
 100         <term><option>--version</option></term>
 101
 102         <listitem><para>Prints a short version
 103         string and exits.</para></listitem>
 104       </varlistentry>
 105
 106       <varlistentry>
 107         <term><option>--user</option></term>
 108
 109         <listitem>
 110           <para>Talk to the service manager of the calling user,
 111           rather than the service manager of the system.</para>
 112         </listitem>
 113       </varlistentry>
 114
 115       <varlistentry>
 116               <term><option>-H</option></term>
 117               <term><option>--host=</option></term>
 118
 119               <listitem><para>Execute operation
 120               remotely. Specify a hostname, or
 121               username and hostname separated by <literal>@</literal>,
 122               to connect to. This will use SSH to
 123               talk to the remote machine manager
 124               instance.</para></listitem>
 125       </varlistentry>
 126
 127       <varlistentry>
 128               <term><option>-M</option></term>
 129               <term><option>--machine=</option></term>
 130
 131               <listitem><para>Execute operation on a
 132               local container. Specify a container
 133               name to connect to.</para></listitem>
 134       </varlistentry>
 135
 136       <varlistentry>
 137         <term><option>--scope</option></term>
 138
 139         <listitem>
 140           <para>Create a transient <filename>.scope</filename> unit instead of
 141           the default transient <filename>.service</filename> unit.
 142           </para>
 143         </listitem>
 144       </varlistentry>
 145
 146       <varlistentry>
 147         <term><option>--unit=</option></term>
 148
 149         <listitem><para>Use this unit name instead of an automatically
 150         generated one.</para></listitem>
 151       </varlistentry>
 152
 153       <varlistentry>
 154         <term><option>--description=</option></term>
 155
 156         <listitem><para>Provide description for the unit. If not
 157         specified, the command itself will be used as a description.
 158         See <varname>Description=</varname> in
 159         <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 160         </para></listitem>
 161       </varlistentry>
 162
 163       <varlistentry>
 164         <term><option>--slice=</option></term>
 165
 166         <listitem><para>Make the new <filename>.service</filename> or
 167         <filename>.scope</filename> unit part of the specified slice,
 168         instead of the <filename>system.slice</filename>.</para>
 169         </listitem>
 170       </varlistentry>
 171
 172       <varlistentry>
 173         <term><option>--remain-after-exit</option></term>
 174
 175         <listitem><para>After the service's process has terminated, keep
 176         the service around until it is explicitly stopped. This is
 177         useful to collect runtime information about the service after
 178         it finished running. Also see
 179         <varname>RemainAfterExit=</varname> in
 180         <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 181         </para>
 182         </listitem>
 183       </varlistentry>
 184
 185       <varlistentry>
 186         <term><option>--send-sighup</option></term>
 187
 188         <listitem><para>When terminating the scope unit, send a SIGHUP
 189         immediately after SIGTERM. This is useful to indicate to
 190         shells and shell-like processes that the connection has been
 191         severed. Also see <varname>SendSIGHUP=</varname> in
 192         <citerefentry><refentrytitle>systemd.kill</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 193         </para>
 194         </listitem>
 195       </varlistentry>
 196     </variablelist>
 197
 198     <para>All command-line arguments after the first non-option
 199     argument become part of the commandline of the launched
 200     process. If a command is run as service unit, its first argument
 201     needs to be an absolute binary path.</para>
 202   </refsect1>
 203
 204   <refsect1>
 205     <title>Exit status</title>
 206
 207     <para>On success, 0 is returned, a non-zero failure
 208     code otherwise.</para>
 209   </refsect1>
 210
 211   <refsect1>
 212     <title>Example</title>
 213
 214     <para>The following command will log the environment variables
 215     provided by systemd to services:</para>
 216
 217     <programlisting># systemd-run env
 218 Running as unit run-19945.service.
 219 # journalctl -u run-19945.service
 220 Sep 08 07:37:21 bupkis systemd[1]: Starting /usr/bin/env...
 221 Sep 08 07:37:21 bupkis systemd[1]: Started /usr/bin/env.
 222 Sep 08 07:37:21 bupkis env[19948]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
 223 Sep 08 07:37:21 bupkis env[19948]: LANG=en_US.UTF-8
 224 Sep 08 07:37:21 bupkis env[19948]: BOOT_IMAGE=/vmlinuz-3.11.0-0.rc5.git6.2.fc20.x86_64
 225     </programlisting>
 226   </refsect1>
 227
 228   <refsect1>
 229     <title>See Also</title>
 230     <para>
 231       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 232       <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 233       <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 234       <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 235       <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 236       <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 237       <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 238     </para>
 239   </refsect1>
 240
 241 </refentry>