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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.
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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.
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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
24 <refentryinfo>
25 <title>systemd-system-update-generator</title>
26 <productname>systemd</productname>
27
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>
37
38 <refmeta>
39 <refentrytitle>systemd-system-update-generator</refentrytitle>
40 <manvolnum>8</manvolnum>
41 </refmeta>
42
43 <refnamediv>
44 <refname>systemd-system-update-generator</refname>
45 <refpurpose>Generator for redirecting boot to offline update mode</refpurpose>
46 </refnamediv>
47
48 <refsynopsisdiv>
49 <para><filename>/usr/lib/systemd/system-generators/systemd-system-update-generator</filename></para>
50 </refsynopsisdiv>
51
52 <refsect1>
53 <title>Description</title>
54
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>
63
64 <para><filename>systemd-system-update-generator</filename> implements
65 <citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
66 </refsect1>
67
68 <refsect1>
69 <title>See Also</title>
70 <para>
71 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
72 <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
73 </para>
74 </refsect1>
75
76 </refentry>