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