X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd-delta.xml;h=4d3ab78040c5212c239312262de127b70b958be0;hp=c66d7e8875140d3dca8056fd820a342839784e8d;hb=6096dfd6167f8520be3a359c1fd0e6f2e76a4dc1;hpb=bb31a4ac1997c189a344caf554f34c6aabc71aa7

diff --git a/man/systemd-delta.xml b/man/systemd-delta.xml
index c66d7e887..4d3ab7804 100644
--- a/man/systemd-delta.xml
+++ b/man/systemd-delta.xml
@@ -49,7 +49,9 @@
 
         <refsynopsisdiv>
                 <cmdsynopsis>
-                        <command>systemd-delta <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt" rep="repeat">SUFFIX</arg></command>
+                        <command>systemd-delta</command>
+			<arg choice="opt" rep="repeat">OPTIONS</arg>
+			<arg choice="opt" rep="repeat"><replaceable>PREFIX</replaceable><optional>/<replaceable>SUFFIX</replaceable></optional>|<replaceable>SUFFIX</replaceable></arg>
                 </cmdsynopsis>
         </refsynopsisdiv>
 
@@ -57,18 +59,46 @@
                 <title>Description</title>
 
                 <para><command>systemd-delta</command> may be used to
-                identify and compare configuration files in
-                <filename>/etc</filename> that override default
-                counterparts in <filename>/usr</filename>. The command
-                line argument can be one or more name of a subdirectories of
-                <filename>/etc</filename> or
-                <filename>/usr/lib</filename> to compare, such as
-                <filename>tmpfiles.d</filename>, <filename>sysctl.d</filename> or
-                <filename>systemd/system</filename>.</para>
-
-                <para>When no argument is specified a number of
-                well-known subdirectories are searched for overridden
-                files.</para>
+                identify and compare configuration files that override
+                other configuration files. Files in
+                <filename>/etc</filename> have highest priority, files
+                in <filename>/run</filename> have the second highest
+                priority, ..., files in <filename>/lib</filename> have
+                lowest priority. Files in a directory with higher
+                priority override files with the same name in
+                directories of lower priority. In addition, certain
+                configuration files can have <literal>.d</literal>
+                directories which contain "drop-in" files with
+                configuration snippets which augment the main
+                configuration file. "Drop-in" files can be overriden
+                in the same way by placing files with the same name in
+                a directory of higher priority (except that in case of
+                "drop-in" files, both the "drop-in" file name and the
+                name of the containing directory, which corresponds to
+                the name of the main configuration file, must match).
+                For a fuller explanation, see
+                <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+		</para>
+
+		<para>The command line argument will be split into a
+		prefix and a suffix. Either is optional. The prefix
+		must be one of the directories containing
+		configuration files (<filename>/etc</filename>,
+		<filename>/run</filename>,
+		<filename>/usr/lib</filename>, ...). If it is given,
+		only overriding files contained in this directory will
+		be shown. Otherwise, all overriding files will be
+		shown. The suffix must be a name of a subdirectory
+		containing configuration files like
+		<filename>tmpfiles.d</filename>,
+		<filename>sysctl.d</filename> or
+		<filename>systemd/system</filename>. If it is given,
+		only configuration files in this subdirectory (across
+		all configuration paths) will be analyzed. Otherwise,
+		all configuration files will be analyzed. If the
+		commandline argument is not given at all, all
+		configuration files will be analyzed. See below for
+		some examples.</para>
         </refsect1>
 
         <refsect1>
@@ -100,8 +130,8 @@
                         </varlistentry>
 
                         <varlistentry>
-                                <term><option>--type=</option></term>
                                 <term><option>-t</option></term>
+                                <term><option>--type=</option></term>
 
                                 <listitem><para>When listing the
                                 differences, only list those that are
@@ -140,6 +170,13 @@
                                                         and changed files.</para></listitem>
                                                 </varlistentry>
 
+                                                <varlistentry>
+                                                        <term><varname>extended</varname></term>
+
+                                                        <listitem><para>Show *.conf files in drop-in
+                                                        directories for units.</para></listitem>
+                                                </varlistentry>
+
                                                 <varlistentry>
                                                         <term><varname>unchanged</varname></term>
 
@@ -156,13 +193,33 @@
                                 <listitem><para>When showing modified
                                 files, when a file is overridden show a
                                 diff as well. This option takes a
-                                boolean argument.</para></listitem>
+                                boolean argument. If omitted, it defaults
+                                to <option>true</option>.</para></listitem>
                         </varlistentry>
 
                 </variablelist>
-
         </refsect1>
 
+	<refsect1>
+		<title>Examples</title>
+
+		<para>To see all local configuration:</para>
+		<programlisting>systemd-delta
+		</programlisting>
+
+		<para>To see all runtime configuration:</para>
+		<programlisting>systemd-delta /run
+		</programlisting>
+
+		<para>To see all system unit configuration changes:</para>
+		<programlisting>systemd-delta systemd/system
+		</programlisting>
+
+		<para>To see all runtime "drop-in" changes for system units:</para>
+		<programlisting>systemd-delta --type=extended /run/systemd/system
+		</programlisting>
+	</refsect1>
+
         <refsect1>
                 <title>Exit status</title>
 
@@ -173,7 +230,8 @@
         <refsect1>
                 <title>See Also</title>
                 <para>
-                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+                        <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
                 </para>
         </refsect1>