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217 lines
10 KiB
XML
217 lines
10 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-delta"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-delta</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-delta</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-delta</refname>
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<refpurpose>Find overridden configuration files</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-delta</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="repeat"><replaceable>PREFIX</replaceable><optional>/<replaceable>SUFFIX</replaceable></optional>|<replaceable>SUFFIX</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-delta</command> may be used to
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identify and compare configuration files that override
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other configuration files. Files in
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<filename>/etc</filename> have highest priority, files
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in <filename>/run</filename> have the second highest
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priority, ..., files in <filename>/lib</filename> have
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lowest priority. Files in a directory with higher
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priority override files with the same name in
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directories of lower priority. In addition, certain
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configuration files can have <literal>.d</literal>
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directories which contain "drop-in" files with
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configuration snippets which augment the main
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configuration file. "Drop-in" files can be overriden
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in the same way by placing files with the same name in
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a directory of higher priority (except that in case of
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"drop-in" files, both the "drop-in" file name and the
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name of the containing directory, which corresponds to
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the name of the main configuration file, must match).
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For a fuller explanation, see
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>The command line argument will be split into a
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prefix and a suffix. Either is optional. The prefix
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must be one of the directories containing
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configuration files (<filename>/etc</filename>,
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<filename>/run</filename>,
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<filename>/usr/lib</filename>, ...). If it is given,
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only overriding files contained in this directory will
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be shown. Otherwise, all overriding files will be
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shown. The suffix must be a name of a subdirectory
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containing configuration files like
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<filename>tmpfiles.d</filename>,
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<filename>sysctl.d</filename> or
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<filename>systemd/system</filename>. If it is given,
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only configuration files in this subdirectory (across
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all configuration paths) will be analyzed. Otherwise,
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all configuration files will be analyzed. If the
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commandline argument is not given at all, all
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configuration files will be analyzed. See below for
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some examples.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>-t</option></term>
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<term><option>--type=</option></term>
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<listitem><para>When listing the
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differences, only list those that are
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asked for. The list itself is a
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comma-separated list of desired
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difference types.</para>
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<para>Recognized types are:
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<variablelist>
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<varlistentry>
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<term><varname>masked</varname></term>
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<listitem><para>Show masked files</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>equivalent</varname></term>
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<listitem><para>Show overridden
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files that while overridden, do
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not differ in content.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>redirected</varname></term>
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<listitem><para>Show files that
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are redirected to another.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>overridden</varname></term>
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<listitem><para>Show overridden,
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and changed files.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>extended</varname></term>
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<listitem><para>Show *.conf files in drop-in
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directories for units.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>unchanged</varname></term>
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<listitem><para>Show unmodified
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files too.</para></listitem>
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</varlistentry>
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</variablelist>
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--diff=</option></term>
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<listitem><para>When showing modified
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files, when a file is overridden show a
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diff as well. This option takes a
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boolean argument. If omitted, it defaults
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to <option>true</option>.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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<xi:include href="standard-options.xml" xpointer="no-pager" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>To see all local configuration:</para>
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<programlisting>systemd-delta</programlisting>
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<para>To see all runtime configuration:</para>
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<programlisting>systemd-delta /run</programlisting>
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<para>To see all system unit configuration changes:</para>
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<programlisting>systemd-delta systemd/system</programlisting>
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<para>To see all runtime "drop-in" changes for system units:</para>
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<programlisting>systemd-delta --type=extended /run/systemd/system</programlisting>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure
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code otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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