man: fix link markup

[thirdparty/systemd.git] / man / systemd-id128.xml

diff --git a/man/systemd-id128.xml b/man/systemd-id128.xml
index 8a76cccd86b3bf61076c78945ba023f2c749114d..747b703653209cc1f9df20d9f15eaea9464b4f6e 100644 (file)
--- a/man/systemd-id128.xml
+++ b/man/systemd-id128.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
 <!-- SPDX-License-Identifier: LGPL-2.1+ -->
 
@@ -73,6 +73,10 @@
     will be printed. This is available in systemd services. See
     <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
     </para>
+
+    <para>With <command>show</command>, well-known UUIDs are printed. When no arguments are specified, all
+    known UUIDs are shown. When arguments are specified, they must be the names or values of one or more
+    known UUIDs, which are then printed.</para>
   </refsect1>
 
   <refsect1>
@@ -99,6 +103,16 @@
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><option>-u</option></term>
+        <term><option>--uuid</option></term>
+
+        <listitem><para>Generate output as an UUID formatted in the "canonical representation", with five
+        groups of digits separated by hyphens. See the
+        <ulink url="https://en.wikipedia.org/wiki/Universally_unique_identifier#Format">wikipedia</ulink>
+        for more discussion.</para></listitem>
+      </varlistentry>
+
       <xi:include href="standard-options.xml" xpointer="help" />
       <xi:include href="standard-options.xml" xpointer="version" />
     </variablelist>