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man: beef up $MAINPID examples

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Inspired by https://github.com/systemd/systemd/pull/15400#discussion_r428537955.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-05-21 14:05:40 +02:00
parent 253acc229c
commit fdf3c16d75
1 changed files with 9 additions and 2 deletions
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11
man/systemd.service.xml
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@ -464,7 +464,7 @@
of the daemon, and may be used for command lines like the
following:</para>
<programlisting>/bin/kill -HUP $MAINPID</programlisting>
<programlisting>ExecReload=kill -HUP $MAINPID</programlisting>
<para>Note however that reloading a daemon by sending a signal
(as with the example line above) is usually not a good choice,
@ -473,7 +473,14 @@
other. It is strongly recommended to set
<varname>ExecReload=</varname> to a command that not only
triggers a configuration reload of the daemon, but also
synchronously waits for it to complete.</para>
synchronously waits for it to complete. For example,
<citerefentry project='mankier'><refentrytitle>dbus-broker</refentrytitle><manvolnum>1</manvolnum></citerefentry>
uses the following:</para>
<programlisting>ExecReload=busctl call org.freedesktop.DBus \
/org/freedesktop/DBus org.freedesktop.DBus \
ReloadConfig
</programlisting>
</listitem>
</varlistentry>