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man: systemd.offline-updates: Document system-update-pre.target usage

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Hans de Goede 2018-06-19 14:33:59 +02:00 committed by Lennart Poettering
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commit bc3c5e1619
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man/systemd.offline-updates.xml
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@ -139,6 +139,17 @@
<varname>After=system-update-pre.target</varname>
and explicitly pull in any other services it requires.</para>
</listitem>
<listitem>
<para>It may be desirable to always run an auxiliary unit when booting
into offline-updates mode, which itself does not install updates. To
do this create a .service file with
<varname>Wants=system-update-pre.target</varname> and
<varname>Before=system-update-pre.target</varname> and add a symlink
to that file under
<filename noindex='true'>/usr/lib/systemd/system-update.target.wants</filename>
.</para>
</listitem>
</orderedlist>
</refsect1>