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3d161f991e
Make this blocking behaviour optional with --no-block, similar to systemctl's switch of this name.
395 lines
16 KiB
XML
395 lines
16 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2013 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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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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(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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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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-run"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-run</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-run</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-run</refname>
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<refpurpose>Run programs in transient scope or service or timer units</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-run</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="plain"><replaceable>COMMAND</replaceable>
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<arg choice="opt" rep="repeat">ARGS</arg>
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</arg>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>systemd-run</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="repeat">TIMER OPTIONS</arg>
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<arg choice="req"><replaceable>COMMAND</replaceable></arg>
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<arg choice="opt" rep="repeat">ARGS</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-run</command> may be used to create and
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start a transient <filename>.service</filename> or a transient
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<filename>.timer</filename> or a <filename>.scope</filename> unit
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and run the specified <replaceable>COMMAND</replaceable> in
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it.</para>
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<para>If a command is run as transient service unit, it will be
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started and managed by the service manager like any other service,
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and thus show up in the output of <command>systemctl
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list-units</command> like any other unit. It will run in a clean
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and detached execution environment. <command>systemd-run</command>
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will start the service asynchronously in the background and
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immediately return.</para>
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<para>If a command is run with timer options, transient timer unit
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also be created with transient service unit. But the transient
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timer unit is only started immediately. The transient service unit
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will be started when the transient timer is elapsed. If
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<option>--unit=</option> is specified with timer options, the
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<replaceable>COMMAND</replaceable> can be omitted. In this case,
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<command>systemd-run</command> assumes service unit is already
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loaded and creates transient timer unit only. To successfully
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create timer unit, already loaded service unit should be specified
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with <option>--unit=</option>. This transient timer unit can
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activate the existing service unit like any other timer.</para>
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<para>If a command is run as transient scope unit, it will be
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started directly by <command>systemd-run</command> and thus
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inherit the execution environment of the caller. It is however
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managed by the service manager similar to normal services, and
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will also show up in the output of <command>systemctl
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list-units</command>. Execution in this case is synchronous, and
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execution will return only when the command finishes.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--scope</option></term>
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<listitem>
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<para>Create a transient <filename>.scope</filename> unit instead of
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the default transient <filename>.service</filename> unit.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--unit=</option></term>
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<listitem><para>Use this unit name instead of an automatically
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generated one.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--property=</option></term>
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<term><option>-p</option></term>
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<listitem><para>Sets a unit property for the scope or service
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unit that is created. This takes an assignment in the same
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format as
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
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<command>set-property</command> command.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--description=</option></term>
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<listitem><para>Provide a description for the service or scope
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unit. If not specified, the command itself will be used as a
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description. See <varname>Description=</varname> in
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--slice=</option></term>
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<listitem><para>Make the new <filename>.service</filename> or
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<filename>.scope</filename> unit part of the specified slice,
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instead of the <filename>system.slice</filename>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--remain-after-exit</option></term>
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<listitem><para>After the service or scope process has
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terminated, keep the service around until it is explicitly
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stopped. This is useful to collect runtime information about
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the service after it finished running. Also see
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<varname>RemainAfterExit=</varname> in
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--send-sighup</option></term>
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<listitem><para>When terminating the scope or service unit,
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send a SIGHUP immediately after SIGTERM. This is useful to
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indicate to shells and shell-like processes that the
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connection has been severed. Also see
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<varname>SendSIGHUP=</varname> in
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<citerefentry><refentrytitle>systemd.kill</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--service-type=</option></term>
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<listitem><para>Sets the service type. Also see
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<varname>Type=</varname> in
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>. This
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option has no effect in conjunction with
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<option>--scope</option>. Defaults to
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<constant>simple</constant>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--uid=</option></term>
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<term><option>--gid=</option></term>
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<listitem><para>Runs the service process under the UNIX user
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and group. Also see <varname>User=</varname> and
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<varname>Group=</varname> in
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--nice=</option></term>
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<listitem><para>Runs the service process with the specified
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nice level. Also see <varname>Nice=</varname> in
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--setenv=</option></term>
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<listitem><para>Runs the service process with the specified
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environment variables set. Also see
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<varname>Environment=</varname> in
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--pty</option></term>
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<term><option>-t</option></term>
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<listitem><para>When invoking a command as service connects
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its standard input and output to the invoking tty via a
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pseudo TTY device. This allows invoking binaries as services
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that expect interactive user input, such as interactive
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command shells.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--quiet</option></term>
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<term><option>-q</option></term>
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<listitem><para>Suppresses additional informational output
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while running. This is particularly useful in combination with
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<option>--pty</option> when it will suppress the initial
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message explaining how to terminate the TTY connection.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--on-active=</option></term>
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<term><option>--on-boot=</option></term>
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<term><option>--on-startup=</option></term>
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<term><option>--on-unit-active=</option></term>
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<term><option>--on-unit-inactive=</option></term>
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<listitem><para>Defines monotonic timers relative to different
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starting points. Also see <varname>OnActiveSec=</varname>,
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<varname>OnBootSec=</varname>,
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<varname>OnStartupSec=</varname>,
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<varname>OnUnitActiveSec=</varname> and
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<varname>OnUnitInactiveSec=</varname> in
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<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>. This
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options have no effect in conjunction with
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<option>--scope</option>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--on-calendar=</option></term>
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<listitem><para>Defines realtime (i.e. wallclock) timers with
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calendar event expressions. Also see
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<varname>OnCalendar=</varname> in
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<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>. This
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option has no effect in conjunction with
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<option>--scope</option>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--timer-property=</option></term>
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<listitem><para>Sets a timer unit property for the timer unit
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that is created. It is similar with
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<option>--property</option> but only for created timer
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unit. This option only has effect in conjunction with
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<option>--on-active=</option>, <option>--on-boot=</option>,
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<option>--on-startup=</option>,
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<option>--on-unit-active=</option>,
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<option>--on-unit-inactive=</option>,
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<option>--on-calendar=</option>. This takes an assignment in
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the same format as
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
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<command>set-property</command> command.</para> </listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-block</option></term>
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<listitem>
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<para>Do not synchronously wait for the requested operation
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to finish. If this is not specified, the job will be
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verified, enqueued and <command>systemd-run</command> will
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wait until the unit's start-up is completed. By passing this
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argument, it is only verified and enqueued.</para>
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</listitem>
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</varlistentry>
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<xi:include href="user-system-options.xml" xpointer="user" />
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<xi:include href="user-system-options.xml" xpointer="system" />
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<xi:include href="user-system-options.xml" xpointer="host" />
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<xi:include href="user-system-options.xml" xpointer="machine" />
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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<para>All command line arguments after the first non-option
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argument become part of the command line of the launched
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process. If a command is run as service unit, its first argument
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needs to be an absolute binary path.</para>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure
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code otherwise.</para>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>The following command will log the environment variables
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provided by systemd to services:</para>
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<programlisting># systemd-run env
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Running as unit run-19945.service.
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# journalctl -u run-19945.service
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Sep 08 07:37:21 bupkis systemd[1]: Starting /usr/bin/env...
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Sep 08 07:37:21 bupkis systemd[1]: Started /usr/bin/env.
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Sep 08 07:37:21 bupkis env[19948]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
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Sep 08 07:37:21 bupkis env[19948]: LANG=en_US.UTF-8
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Sep 08 07:37:21 bupkis env[19948]: BOOT_IMAGE=/vmlinuz-3.11.0-0.rc5.git6.2.fc20.x86_64</programlisting>
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<para>The following command invokes the
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<citerefentry project='man-pages'><refentrytitle>updatedb</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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tool, but lowers the block IO weight for it to 10. See
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<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for more information on the <varname>BlockIOWeight=</varname>
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property.</para>
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<programlisting># systemd-run -p BlockIOWeight=10 updatedb</programlisting>
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<para>The following command will touch a file after 30 seconds.</para>
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<programlisting># date; systemd-run --on-active=30 --timer-property=AccuracySec=100ms /bin/touch /tmp/foo
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Mon Dec 8 20:44:24 KST 2014
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Running as unit run-71.timer.
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Will run as unit run-71.service.
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# journalctl -b -u run-71.timer
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-- Logs begin at Fri 2014-12-05 19:09:21 KST, end at Mon 2014-12-08 20:44:54 KST. --
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Dec 08 20:44:38 container systemd[1]: Starting /bin/touch /tmp/foo.
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Dec 08 20:44:38 container systemd[1]: Started /bin/touch /tmp/foo.
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# journalctl -b -u run-71.service
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-- Logs begin at Fri 2014-12-05 19:09:21 KST, end at Mon 2014-12-08 20:44:54 KST. --
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Dec 08 20:44:48 container systemd[1]: Starting /bin/touch /tmp/foo...
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Dec 08 20:44:48 container systemd[1]: Started /bin/touch /tmp/foo.</programlisting>
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<para>The following command invokes <filename>/bin/bash</filename>
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as a service passing its standard input, output and error to
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the calling TTY.</para>
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<programlisting># systemd-run -t /bin/bash</programlisting>
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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.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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