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1<?xml version="1.0"?>
2<!--*-nxml-*-->
3<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
4<!--
5 This file is part of systemd.
6
7 Copyright 2012 Lennart Poettering
8
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
13
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
21-->
22<refentry id="systemd-system-update-generator">
23
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24 <refentryinfo>
25 <title>systemd-system-update-generator</title>
26 <productname>systemd</productname>
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28 <authorgroup>
29 <author>
30 <contrib>Developer</contrib>
31 <firstname>Lennart</firstname>
32 <surname>Poettering</surname>
33 <email>lennart@poettering.net</email>
34 </author>
35 </authorgroup>
36 </refentryinfo>
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38 <refmeta>
39 <refentrytitle>systemd-system-update-generator</refentrytitle>
40 <manvolnum>8</manvolnum>
41 </refmeta>
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43 <refnamediv>
44 <refname>systemd-system-update-generator</refname>
45 <refpurpose>Generator for redirecting boot to offline update mode</refpurpose>
46 </refnamediv>
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48 <refsynopsisdiv>
49 <para><filename>/usr/lib/systemd/system-generators/systemd-system-update-generator</filename></para>
50 </refsynopsisdiv>
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52 <refsect1>
53 <title>Description</title>
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55 <para><filename>systemd-system-update-generator</filename> is a
56 generator that automatically redirects the boot process to
57 <filename>system-update.target</filename> if
58 <filename>/system-update</filename> exists. This is required to
59 implement the logic explained in the <ulink
60 url="http://freedesktop.org/wiki/Software/systemd/SystemUpdates">System
61 Updates Specification</ulink>.
62 </para>
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64 <para><filename>systemd-system-update-generator</filename>
65 implements the
66 <ulink url="http://www.freedesktop.org/wiki/Software/systemd/Generators">generator
67 specification</ulink>.</para>
68 </refsect1>
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70 <refsect1>
71 <title>See Also</title>
72 <para>
73 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
74 <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
75 </para>
76 </refsect1>
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77
78</refentry>