Document (final) assignment on the RUN (#12310)

As described in #12291, final assignments and assignments are clearing both command types.

diff --git a/man/udev.xml b/man/udev.xml
index 5a78be3208b7fa05251c50b70823afe7646eaaa7..98d17bbb54a8ca606cc542fe9e02ded933ce8b3c 100644 (file)
--- a/man/udev.xml
+++ b/man/udev.xml
@@ -437,6 +437,8 @@
             <para>Note that running programs that access the network or mount/unmount
             filesystems is not allowed inside of udev rules, due to the default sandbox
             that is enforced on <filename>systemd-udevd.service</filename>.</para>
+            <para>Please also note that <literal>:=</literal> and <literal>=</literal> are clearing
+            both, program and builtin commands.</para>
           </listitem>
         </varlistentry>