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man: tweak WantedBy=/RequiredBy= description a bit

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https://bugs.freedesktop.org/show_bug.cgi?id=55663
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2013-07-13 23:36:51 -04:00
parent bf502e636b
commit 3eb1395706
1 changed files with 36 additions and 9 deletions
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man/systemd.unit.xml
+36 -9
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@@ -1115,19 +1115,46 @@
<term><varname>WantedBy=</varname></term>
<term><varname>RequiredBy=</varname></term>
<listitem><para>Installs a symlink in
the <filename>.wants/</filename>
or <filename>.requires/</filename>
subdirectory for a unit, respectively. This has the
effect that when the listed unit name
is activated the unit listing it is
activated
too. <command>WantedBy=foo.service</command>
<listitem><para>A symbolic link is
created in the
<filename>.wants/</filename> or
<filename>.requires/</filename> folder
of the listed unit when this unit is
activated by <command>systemctl
enable</command>. This has the effect
that a dependency of type
<varname>Wants=</varname> or
<varname>Requires=</varname> is added
from the listed unit to the current
unit. The primary result is that the
current unit will be started when the
listed unit is started. See the
description of
<varname>Wants=</varname> and
<varname>Requires=</varname> in the
[Unit] section for details.</para>
<para><command>WantedBy=foo.service</command>
in a service
<filename>bar.service</filename> is
mostly equivalent to
<command>Alias=foo.service.wants/bar.service</command>
in the same file.</para></listitem>
in the same file. In case of template
units, <command>systemctl enable</command>
must be called with an instance name, and
this instance will be added to the
<filename>.wants/</filename> or
<filename>.requires/</filename> list
of the listed unit.
E.g. <command>WantedBy=getty.target</command>
in a service
<filename>getty@.service</filename>
will result in <command>systemctl
enable getty@tty2.service</command>
creating a
<filename>getty.target.wants/getty@tty2.service</filename>
link to <filename>getty@.service</filename>.
</para></listitem>
</varlistentry>
<varlistentry>