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man: clarify 'config file stack'

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Kay Sievers 2011-11-22 23:51:17 +01:00
parent d35f720418
commit 1021e6dfcc
1 changed files with 12 additions and 8 deletions
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udev/udev.xml
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@ -71,14 +71,18 @@
<refsect2><title>Rules files</title>
<para>The udev rules are read from the files located in the
default rules directory <filename>/lib/udev/rules.d/</filename>,
the custom rules directory <filename>/etc/udev/rules.d/</filename>
and the temporary rules directory <filename>/run/udev/rules.d/</filename>.
All rule files are collectively sorted and processed in lexical order,
regardless of the directories in which they live. However, files in
<filename>/etc/udev/rules.d/</filename> take precedence over files with
the same name in <filename>/lib/udev/rules.d/</filename>; this can be
used to ignore a default rules file if needed.</para>
system rules directory <filename>/lib/udev/rules.d/</filename>,
the local administration directory <filename>/etc/udev/rules.d/</filename>
and the volatile runtime directory <filename>/run/udev/rules.d/</filename>.
All rules files are collectively sorted and processed in lexical order,
regardless of the directories in which they live. However, files with
identical file names replace each other. Files in <filename>/run</filename>
have the highest priority, files in <filename>/etc</filename> take precedence
over files with the same name in <filename>/lib</filename>. This can be
used to overwrite a system rules file if needed; a symlink in
<filename>/etc</filename> with the same name as a rules file in
<filename>/lib</filename>, pointing to <filename>/dev/null</filename>,
disables the rules file entirely.</para>
<para>Rule files must have the extension <filename>.rules</filename>; other
extensions are ignored.</para>