man: document systemd-update-generator
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Lennart Poettering
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@ -498,7 +498,8 @@ MANPAGES = \
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man/systemd-ask-password-console.service.8 \
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man/systemd-analyze.1 \
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man/systemd-tty-ask-password-agent.1 \
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man/systemd-getty-generator.8
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man/systemd-getty-generator.8 \
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man/systemd-system-update-generator.8
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MANPAGES_ALIAS = \
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man/reboot.8 \
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@ -0,0 +1,79 @@
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<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "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 2012 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 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-system-update-generator">
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<refentryinfo>
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<title>systemd-system-update-generator</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-system-update-generator</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-system-update-generator</refname>
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<refpurpose>Generator for redirecting boot to offline update mode</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/usr/lib/systemd/system-generators/systemd-system-update-generator</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-system-update-generator</filename>
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is a generator that automatically redirects the boot
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process to <filename>system-update.target</filename>
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if <filename>/system-update</filename> exists. This is
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required to implement the logic explained in the
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<ulink
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url="http://freedesktop.org/wiki/Software/systemd/SystemUpdates">System
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Updates Specification</ulink>.
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</para>
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<para><filename>systemd-system-update-generator</filename>
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implements the <ulink
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url="http://www.freedesktop.org/wiki/Software/systemd/Generator">generator
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specification</ulink>.</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>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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@ -96,6 +96,7 @@
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<filename>syslog.service</filename>,
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<filename>syslog.socket</filename>,
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<filename>syslog.target</filename>,
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<filename>system-update.target</filename>,
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<filename>time-sync.target</filename>,
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<filename>umount.target</filename></para>
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</refsynopsisdiv>
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@ -764,6 +765,23 @@
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facility.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>system-update.target</filename></term>
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<listitem>
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<para>A special target unit
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that is used for off-line
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system updates.
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<citerefentry><refentrytitle>systemd-system-update-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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will redirect the boot process
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to this target if
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<filename>/system-update</filename>
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exists. For more information
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see the <ulink
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url="http://freedesktop.org/wiki/Software/systemd/SystemUpdates">System
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Updates
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Specification</ulink>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>time-sync.target</filename></term>
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<listitem>
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@ -795,6 +813,7 @@
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is set (the default).</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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@ -7,7 +7,7 @@
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[Unit]
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Description=Serial Getty on %I
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Documentation=man:agetty(8)
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Documentation=man:agetty(8) man:systemd-getty-generator(8)
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BindTo=dev-%i.device
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After=dev-%i.device systemd-user-sessions.service plymouth-quit-wait.service
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m4_ifdef(`TARGET_FEDORA',
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@ -8,7 +8,7 @@
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[Unit]
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Description=System Update
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Documentation=http://freedesktop.org/wiki/Software/systemd/SystemUpdates
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Documentation=man:systemd.special(7)
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Documentation=man:systemd.special(7) man:systemd-system-update-generator(8)
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Requires=sysinit.target
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Conflicts=shutdown.target systemd-readahead-collect.service systemd-readahead-replay.service
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After=sysinit.target
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