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88 lines
3.6 KiB
XML
88 lines
3.6 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
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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 2010 Lennart Poettering
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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 General Public License as published by
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the Free Software Foundation; either version 2 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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General Public License for more details.
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You should have received a copy of the GNU 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.snapshot">
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<refentryinfo>
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<title>systemd.snapshot</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.snapshot</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd.snapshot</refname>
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<refpurpose>systemd snapshot units</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd.snapshot</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>Snapshot units are not configured via unit
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configuration files. Nonetheless they are named
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similar to filenames. A unit name whose name ends in
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<filename>.snapshot</filename> refers to a dynamic
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snapshot of the systemd runtime state.</para>
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<para>Snapshots are not configured on disk but created
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dynamically via <command>systemctl snapshot</command>
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(see
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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for details) or an equivalent command. When created,
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they will automatically get dependencies on the
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currently activated units. They act as saved
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runtime state of the systemd manager. Later on, the
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user may choose to return to the saved state via
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<command>systemctl isolate</command>. They are
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useful to roll back to a defined state after
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temporarily starting/stopping services or
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similar.</para>
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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>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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