<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*--> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> <!-- This file is part of systemd. Copyright 2013 Zbigniew Jędrzejewski-Szmek systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. --> <refentry id="systemd.scope"> <refentryinfo> <title>systemd.scope</title> <productname>systemd</productname> <authorgroup> <author> <contrib>Developer</contrib> <firstname>Lennart</firstname> <surname>Poettering</surname> <email>lennart@poettering.net</email> </author> </authorgroup> </refentryinfo> <refmeta> <refentrytitle>systemd.scope</refentrytitle> <manvolnum>5</manvolnum> </refmeta> <refnamediv> <refname>systemd.scope</refname> <refpurpose>Scope unit configuration</refpurpose> </refnamediv> <refsynopsisdiv> <para><filename><replaceable>scope</replaceable>.scope</filename></para> </refsynopsisdiv> <refsect1> <title>Description</title> <para>Scope units are not configured via unit configuration files, but are only created programmatically using the bus interfaces of systemd. They are named similar to filenames. A unit whose name ends in <literal>.scope</literal> refers to a scope unit. Scopes units manage a set of system processes. Unlike service units, scope units manage externally created processes, and do not fork off processes on its own.</para> <para>The main purpose of scope units is grouping worker processes of a system service for organization and for managing resources.</para> <para><command>systemd-run <option>--scope</option></command> may be used to easily launch a command in a new scope unit from the command line.</para> <para>See the <ulink url="http://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/">New Control Group Interfaces</ulink> for an introduction on how to make use of scope units from programs.</para> </refsect1> <refsect1> <title>Automatic Dependencies</title> <para>Unless <varname>DefaultDependencies=false</varname> is used, scope units will implicitly have dependencies of type <varname>Conflicts=</varname> and <varname>Before=</varname> on <filename>shutdown.target</filename>. These ensure that scope units are removed prior to system shutdown. Only scope units involved with early boot or late system shutdown should disable this option. </para> <para>Additional implicit dependencies may be added as result of resource control parameters as documented in <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> </refsect1> <refsect1> <title>See Also</title> <para> <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>. </para> </refsect1> </refentry>