man/systemd-run.xml

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  23
  24 <refentry id="systemd-run"
  25           xmlns:xi="http://www.w3.org/2001/XInclude">
  26
  27   <refentryinfo>
  28     <title>systemd-run</title>
  29     <productname>systemd</productname>
  30
  31     <authorgroup>
  32       <author>
  33         <contrib>Developer</contrib>
  34         <firstname>Lennart</firstname>
  35         <surname>Poettering</surname>
  36         <email>lennart@poettering.net</email>
  37       </author>
  38     </authorgroup>
  39   </refentryinfo>
  40
  41   <refmeta>
  42     <refentrytitle>systemd-run</refentrytitle>
  43     <manvolnum>1</manvolnum>
  44   </refmeta>
  45
  46   <refnamediv>
  47     <refname>systemd-run</refname>
  48     <refpurpose>Run programs in transient scope or service units</refpurpose>
  49   </refnamediv>
  50
  51   <refsynopsisdiv>
  52     <cmdsynopsis>
  53       <command>systemd-run</command>
  54       <arg choice="opt" rep="repeat">OPTIONS</arg>
  55       <arg choice="plain"><replaceable>COMMAND</replaceable>
  56       <arg choice="opt" rep="repeat">ARGS</arg>
  57       </arg>
  58     </cmdsynopsis>
  59   </refsynopsisdiv>
  60
  61   <refsect1>
  62     <title>Description</title>
  63
  64     <para><command>systemd-run</command> may be used to create and start
  65     a transient <filename>.service</filename> or a
  66     <filename>.scope</filename> unit and run the specified
  67     <replaceable>COMMAND</replaceable> in it.</para>
  68
  69     <para>If a command is run as transient service unit, it will be
  70     started and managed by the service manager like any other service,
  71     and thus show up in the output of <command>systemctl
  72     list-units</command> like any other unit. It will run in a clean
  73     and detached execution environment. <command>systemd-run</command>
  74     will start the service asynchronously in the background and
  75     immediately return.</para>
  76
  77     <para>If a command is run as transient scope unit, it will be
  78     started directly by <command>systemd-run</command> and thus
  79     inherit the execution environment of the caller. It is however
  80     managed by the service manager similar to normal services, and
  81     will also show up in the output of <command>systemctl
  82     list-units</command>. Execution in this case is synchronous, and
  83     execution will return only when the command finishes.</para>
  84   </refsect1>
  85
  86   <refsect1>
  87     <title>Options</title>
  88
  89     <para>The following options are understood:</para>
  90
  91     <variablelist>
  92       <varlistentry>
  93         <term><option>--scope</option></term>
  94
  95         <listitem>
  96           <para>Create a transient <filename>.scope</filename> unit instead of
  97           the default transient <filename>.service</filename> unit.
  98           </para>
  99         </listitem>
 100       </varlistentry>
 101
 102       <varlistentry>
 103         <term><option>--unit=</option></term>
 104
 105         <listitem><para>Use this unit name instead of an automatically
 106         generated one.</para></listitem>
 107       </varlistentry>
 108
 109       <varlistentry>
 110         <term><option>--description=</option></term>
 111
 112         <listitem><para>Provide description for the unit. If not
 113         specified, the command itself will be used as a description.
 114         See <varname>Description=</varname> in
 115         <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 116         </para></listitem>
 117       </varlistentry>
 118
 119       <varlistentry>
 120         <term><option>--slice=</option></term>
 121
 122         <listitem><para>Make the new <filename>.service</filename> or
 123         <filename>.scope</filename> unit part of the specified slice,
 124         instead of the <filename>system.slice</filename>.</para>
 125         </listitem>
 126       </varlistentry>
 127
 128       <varlistentry>
 129         <term><option>--remain-after-exit</option></term>
 130
 131         <listitem><para>After the service's process has terminated, keep
 132         the service around until it is explicitly stopped. This is
 133         useful to collect runtime information about the service after
 134         it finished running. Also see
 135         <varname>RemainAfterExit=</varname> in
 136         <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 137         </para>
 138         </listitem>
 139       </varlistentry>
 140
 141       <varlistentry>
 142         <term><option>--send-sighup</option></term>
 143
 144         <listitem><para>When terminating the scope unit, send a SIGHUP
 145         immediately after SIGTERM. This is useful to indicate to
 146         shells and shell-like processes that the connection has been
 147         severed. Also see <varname>SendSIGHUP=</varname> in
 148         <citerefentry><refentrytitle>systemd.kill</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
 149         </para>
 150         </listitem>
 151       </varlistentry>
 152
 153       <xi:include href="user-system-options.xml" xpointer="user" />
 154       <xi:include href="user-system-options.xml" xpointer="system" />
 155       <xi:include href="user-system-options.xml" xpointer="host" />
 156       <xi:include href="user-system-options.xml" xpointer="machine" />
 157
 158       <xi:include href="standard-options.xml" xpointer="help" />
 159       <xi:include href="standard-options.xml" xpointer="version" />
 160     </variablelist>
 161
 162     <para>All command-line arguments after the first non-option
 163     argument become part of the commandline of the launched
 164     process. If a command is run as service unit, its first argument
 165     needs to be an absolute binary path.</para>
 166   </refsect1>
 167
 168   <refsect1>
 169     <title>Exit status</title>
 170
 171     <para>On success, 0 is returned, a non-zero failure
 172     code otherwise.</para>
 173   </refsect1>
 174
 175   <refsect1>
 176     <title>Example</title>
 177
 178     <para>The following command will log the environment variables
 179     provided by systemd to services:</para>
 180
 181     <programlisting># systemd-run env
 182 Running as unit run-19945.service.
 183 # journalctl -u run-19945.service
 184 Sep 08 07:37:21 bupkis systemd[1]: Starting /usr/bin/env...
 185 Sep 08 07:37:21 bupkis systemd[1]: Started /usr/bin/env.
 186 Sep 08 07:37:21 bupkis env[19948]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
 187 Sep 08 07:37:21 bupkis env[19948]: LANG=en_US.UTF-8
 188 Sep 08 07:37:21 bupkis env[19948]: BOOT_IMAGE=/vmlinuz-3.11.0-0.rc5.git6.2.fc20.x86_64</programlisting>
 189   </refsect1>
 190
 191   <refsect1>
 192     <title>See Also</title>
 193     <para>
 194       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 195       <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 196       <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 197       <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 198       <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 199       <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
 200       <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
 201     </para>
 202   </refsect1>
 203
 204 </refentry>