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+<?xml version="1.0"?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refsection PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
+
+<refsection>
+ <refsection id='confd'>
+ <title>Configuration Directories and Precedence</title>
+
+ <para>Configuration files are read from directories in
+ <filename>/etc/</filename>, <filename>/run/</filename>, and
+ <filename>/usr/lib/</filename>, in order of precedence.
+ Each configuration file in these configuration directories shall be named in
+ the style of <filename><replaceable>filename</replaceable>.conf</filename>.
+ Files in <filename>/etc/</filename> override files with the same name in
+ <filename>/run/</filename> and <filename>/usr/lib/</filename>. Files in
+ <filename>/run/</filename> override files with the same name in
+ <filename>/usr/lib/</filename>.</para>
+
+ <para>Packages should install their configuration files in
+ <filename>/usr/lib/</filename>. Files in <filename>/etc/</filename> are
+ reserved for the local administrator, who may use this logic to override the
+ configuration files installed by vendor packages. All configuration files
+ are sorted by their filename in lexicographic order, regardless of which of
+ the directories they reside in. If multiple files specify the same option,
+ the entry in the file with the lexicographically latest name will take
+ precedence. It is recommended to prefix all filenames with a two-digit number
+ and a dash, to simplify the ordering of the files.</para>
+
+ <para>If the administrator wants to disable a configuration file supplied by
+ the vendor, the recommended way is to place a symlink to
+ <filename>/dev/null</filename> in the configuration directory in
+ <filename>/etc/</filename>, with the same filename as the vendor
+ configuration file.</para>
+ </refsection>
+
+ <refsection id='conf'>
+ <title>Configuration File</title>
+
+ <para>Configuration is also read from a single configuration file in
+ <filename>/etc/</filename>. This file is read before any of the
+ configuration directories, and has the lowest precedence; entries in a file
+ in any configuration directory override entries in the single configuration
+ file.</para>
+ </refsection>
+</refsection>