move man pages to appropriate directories

6 files changed, 1791 insertions, 0 deletions

diff --git a/src/grp-udev/hwdb/hwdb.xml b/src/grp-udev/hwdb/hwdb.xml
new file mode 100644
index 0000000000..2b1e60fb22
--- /dev/null
+++ b/src/grp-udev/hwdb/hwdb.xml
@@ -0,0 +1,85 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="hwdb" conditional="ENABLE_HWDB">
+  <refentryinfo>
+    <title>hwdb</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Tom</firstname>
+        <surname>Gundersen</surname>
+        <email>teg@jklm.no</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>hwdb</refentrytitle>
+    <manvolnum>7</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>hwdb</refname>
+    <refpurpose>Hardware Database</refpurpose>
+  </refnamediv>
+
+  <refsect1><title>Description</title>
+    <para>The hardware database is a key-value store for associating modalias-like keys to
+    udev-property-like values. It is used primarily by udev to add the relevant properties
+    to matching devices, but it can also be queried directly.</para>
+  </refsect1>
+
+  <refsect1><title>Hardware Database Files</title>
+      <para>The hwdb files are read from the files located in the
+      system hwdb directory <filename>/usr/lib/udev/hwdb.d</filename> and
+      the local administration directory <filename>/etc/udev/hwdb.d</filename>.
+      All hwdb files are collectively sorted and processed in lexical order,
+      regardless of the directories in which they live. However, files with
+      identical filenames replace each other. Files in <filename>/etc</filename>
+      have the highest priority and take precedence over files with the same
+      name in <filename>/usr/lib</filename>. This can be used to override a
+      system-supplied hwdb file with a local file if needed;
+      a symlink in <filename>/etc</filename> with the same name as a hwdb file in
+      <filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>,
+      disables the hwdb file entirely. hwdb files must have the extension
+      <filename>.hwdb</filename>; other extensions are ignored.</para>
+
+      <para>The hwdb file contains data records consisting of matches and
+      associated key-value pairs. Every record in the hwdb starts with one or
+      more match strings, specifying a shell glob to compare the database
+      lookup string against. Multiple match lines are specified in additional
+      consecutive lines. Every match line is compared individually, and they are
+      combined by OR. Every match line must start at the first character of
+      the line.</para>
+
+      <para>The match lines are followed by one or more key-value pair lines, which
+      are recognized by a leading space character. The key name and value are separated
+      by <literal>=</literal>. An empty line signifies the end
+      of a record. Lines beginning with <literal>#</literal> are ignored.</para>
+
+      <para>The content of all hwdb files is read by
+      <citerefentry><refentrytitle>systemd-hwdb</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+      and compiled to a binary database located at <filename>/etc/udev/hwdb.bin</filename>,
+      or alternatively <filename>/usr/lib/udev/hwdb.bin</filename> if you want ship the compiled
+      database in an immutable image.
+      During runtime, only the binary database is used.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry>
+        <refentrytitle>systemd-hwdb</refentrytitle><manvolnum>8</manvolnum>
+      </citerefentry>
+    </para>
+  </refsect1>
+</refentry>
diff --git a/src/grp-udev/systemd-hwdb/systemd-hwdb.xml b/src/grp-udev/systemd-hwdb/systemd-hwdb.xml
new file mode 100644
index 0000000000..2b363c77f2
--- /dev/null
+++ b/src/grp-udev/systemd-hwdb/systemd-hwdb.xml
@@ -0,0 +1,93 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="systemd-hwdb" conditional="ENABLE_HWDB">
+  <refentryinfo>
+    <title>systemd-hwdb</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Tom</firstname>
+        <surname>Gundersen</surname>
+        <email>teg@jklm.no</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd-hwdb</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-hwdb</refname><refpurpose>hardware database management tool</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>systemd-hwdb <optional>options</optional> update</command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>systemd-hwdb <optional>options</optional> query <replaceable>modalias</replaceable></command>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1><title>Description</title>
+    <para><command>systemd-hwdb</command> expects a command and command
+    specific arguments.  It manages the binary hardware database.</para>
+  </refsect1>
+
+  <refsect1><title>Options</title>
+    <variablelist>
+      <varlistentry>
+        <term><option>-h</option></term>
+        <term><option>--help</option></term>
+        <listitem>
+          <para>Print help text.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>--usr</option></term>
+        <listitem>
+          <para>Generate in /usr/lib/udev instead of /etc/udev.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>-r</option></term>
+        <term><option>--root=<replaceable>PATH</replaceable></option></term>
+        <listitem>
+          <para>Alternate root path in the filesystem.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+
+    <refsect2><title>systemd-hwdb
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      update</title>
+      <para>Update the binary database.</para>
+    </refsect2>
+
+    <refsect2><title>systemd-hwdb
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      query
+      <arg><replaceable>MODALIAS</replaceable></arg>
+    </title>
+      <para>Query database and print result.</para>
+    </refsect2>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para><citerefentry>
+        <refentrytitle>hwdb</refentrytitle><manvolnum>7</manvolnum>
+    </citerefentry></para>
+  </refsect1>
+</refentry>
diff --git a/src/grp-udev/systemd-udevd/systemd-udevd.service.xml b/src/grp-udev/systemd-udevd/systemd-udevd.service.xml
new file mode 100644
index 0000000000..243fd06471
--- /dev/null
+++ b/src/grp-udev/systemd-udevd/systemd-udevd.service.xml
@@ -0,0 +1,188 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="systemd-udevd.service"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>systemd-udevd.service</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd-udevd.service</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-udevd.service</refname>
+    <refname>systemd-udevd-control.socket</refname>
+    <refname>systemd-udevd-kernel.socket</refname>
+    <refname>systemd-udevd</refname>
+    <refpurpose>Device event managing daemon</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename>systemd-udevd.service</filename></para>
+    <para><filename>systemd-udevd-control.socket</filename></para>
+    <para><filename>systemd-udevd-kernel.socket</filename></para>
+
+    <cmdsynopsis>
+      <command>/usr/lib/systemd/systemd-udevd</command>
+      <arg><option>--daemon</option></arg>
+      <arg><option>--debug</option></arg>
+      <arg><option>--children-max=</option></arg>
+      <arg><option>--exec-delay=</option></arg>
+      <arg><option>--event-timeout=</option></arg>
+      <arg><option>--resolve-names=early|late|never</option></arg>
+      <arg><option>--version</option></arg>
+      <arg><option>--help</option></arg>
+    </cmdsynopsis>
+
+  </refsynopsisdiv>
+
+  <refsect1><title>Description</title>
+    <para><command>systemd-udevd</command> listens to kernel uevents.
+    For every event, systemd-udevd executes matching instructions
+    specified in udev rules. See <citerefentry>
+    <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
+    </citerefentry>.</para>
+
+    <para>The behavior of the daemon can be configured using
+    <citerefentry><refentrytitle>udev.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+    its command line options, environment variables, and on the kernel
+    command line, or changed dynamically with <command>udevadm
+    control</command>.
+    </para>
+  </refsect1>
+
+  <refsect1><title>Options</title>
+    <variablelist>
+      <varlistentry>
+        <term><option>--daemon</option></term>
+        <listitem>
+          <para>Detach and run in the background.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--debug</option></term>
+        <listitem>
+          <para>Print debug messages to standard error.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--children-max=</option></term>
+        <listitem>
+          <para>Limit the number of events executed in parallel.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--exec-delay=</option></term>
+        <listitem>
+          <para>Delay the execution of <varname>RUN</varname>
+          instructions by the given number of seconds. This option
+          might be useful when debugging system crashes during
+          coldplug caused by loading non-working kernel
+          modules.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--event-timeout=</option></term>
+        <listitem>
+          <para>Set the number of seconds to wait for events to finish. After
+          this time, the event will be terminated. The default is 180 seconds.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--resolve-names=</option></term>
+        <listitem>
+          <para>Specify when systemd-udevd should resolve names of users and groups.
+          When set to <option>early</option> (the default), names will be
+          resolved when the rules are parsed.  When set to
+          <option>late</option>, names will be resolved for every event.
+          When set to <option>never</option>, names will never be resolved
+          and all devices will be owned by root.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--help</option></term>
+
+        <xi:include href="standard-options.xml" xpointer="help-text" />
+      </varlistentry>
+      <xi:include href="standard-options.xml" xpointer="version" />
+    </variablelist>
+  </refsect1>
+
+  <refsect1><title>Kernel command line</title>
+    <variablelist class='kernel-commandline-options'>
+      <para>Parameters starting with "rd." will be read when
+      <command>systemd-udevd</command> is used in an initrd.</para>
+      <varlistentry>
+        <term><varname>udev.log-priority=</varname></term>
+        <term><varname>rd.udev.log-priority=</varname></term>
+        <listitem>
+          <para>Set the log level.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>udev.children-max=</varname></term>
+        <term><varname>rd.udev.children-max=</varname></term>
+        <listitem>
+          <para>Limit the number of events executed in parallel.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>udev.exec-delay=</varname></term>
+        <term><varname>rd.udev.exec-delay=</varname></term>
+        <listitem>
+          <para>Delay the execution of <varname>RUN</varname> instructions by the given
+          number of seconds. This option might be useful when
+          debugging system crashes during coldplug caused by loading
+          non-working kernel modules.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>udev.event-timeout=</varname></term>
+        <term><varname>rd.udev.event-timeout=</varname></term>
+        <listitem>
+          <para>Wait for events to finish up to the given number
+          of seconds. This option might be useful if events are
+          terminated due to kernel drivers taking too long to initialize.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>net.ifnames=</varname></term>
+        <listitem>
+          <para>Network interfaces are renamed to give them predictable names
+          when possible. It is enabled by default; specifying 0 disables it.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+    <!-- when adding entries here, consider also adding them
+         in kernel-command-line.xml -->
+ </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>udev.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+</refentry>
diff --git a/src/grp-udev/udev.conf.xml b/src/grp-udev/udev.conf.xml
new file mode 100644
index 0000000000..e104e53f5d
--- /dev/null
+++ b/src/grp-udev/udev.conf.xml
@@ -0,0 +1,94 @@
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+  This file is part of systemd.
+
+  Copyright 2014 Zbigniew Jędrzejewski-Szmek
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="udev.conf"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>udev.conf</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>udev.conf</refentrytitle>
+    <manvolnum>5</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>udev.conf</refname>
+    <refpurpose>Configuration for device event managing daemon</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename>/etc/udev/udev.conf</filename></para>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para>
+      <citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+      expects its main configuration file at
+      <filename>/etc/udev/udev.conf</filename>. It consists of a set
+      of variables allowing the user to override default udev
+      values. All empty lines or lines beginning with '#' are
+      ignored. The following variables can be set:
+    </para>
+
+    <variablelist>
+      <varlistentry>
+        <term><varname>udev_log</varname></term>
+
+        <listitem>
+          <para>The log level. Valid values are the numerical
+          syslog priorities or their textual representations:
+          <option>err</option>, <option>info</option> and
+          <option>debug</option>.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+
+    <para>
+      In addition, <filename>systemd-udevd</filename> can be configured
+      by command line options and the kernel command line (see
+      <citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
+    </para>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+</refentry>
diff --git a/src/grp-udev/udev.xml b/src/grp-udev/udev.xml
new file mode 100644
index 0000000000..dd5563605c
--- /dev/null
+++ b/src/grp-udev/udev.xml
@@ -0,0 +1,755 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="udev">
+  <refentryinfo>
+    <title>udev</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Greg</firstname>
+        <surname>Kroah-Hartmann</surname>
+        <email>greg@kroah.com</email>
+      </author>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>udev</refentrytitle>
+    <manvolnum>7</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>udev</refname>
+    <refpurpose>Dynamic device management</refpurpose>
+  </refnamediv>
+
+  <refsect1><title>Description</title>
+    <para>udev supplies the system software with device events, manages permissions
+    of device nodes and may create additional symlinks in the <filename>/dev</filename>
+    directory, or renames network interfaces. The kernel usually just assigns unpredictable
+    device names based on the order of discovery. Meaningful symlinks or network device
+    names provide a way to reliably identify devices based on their properties or
+    current configuration.</para>
+
+    <para>The udev daemon, <citerefentry><refentrytitle>systemd-udevd.service</refentrytitle>
+    <manvolnum>8</manvolnum></citerefentry>, receives device uevents directly from
+    the kernel whenever a device is added or removed from the system, or it changes its
+    state. When udev receives a device event, it matches its configured set of rules
+    against various device attributes to identify the device. Rules that match may
+    provide additional device information to be stored in the udev database or
+    to be used to create meaningful symlink names.</para>
+
+    <para>All device information udev processes is stored in the udev database and
+    sent out to possible event subscribers. Access to all stored data and the event
+    sources is provided by the library libudev.</para>
+  </refsect1>
+
+  <refsect1><title>Rules Files</title>
+      <para>The udev rules are read from the files located in the
+      system rules directory <filename>/usr/lib/udev/rules.d</filename>,
+      the volatile runtime directory <filename>/run/udev/rules.d</filename>
+      and the local administration directory <filename>/etc/udev/rules.d</filename>.
+      All rules files are collectively sorted and processed in lexical order,
+      regardless of the directories in which they live. However, files with
+      identical filenames replace each other. Files in <filename>/etc</filename>
+      have the highest priority, files in <filename>/run</filename> take precedence
+      over files with the same name in <filename>/usr/lib</filename>. This can be
+      used to override a system-supplied rules file with a local file if needed;
+      a symlink in <filename>/etc</filename> with the same name as a rules file in
+      <filename>/usr/lib</filename>, pointing to <filename>/dev/null</filename>,
+      disables the rules file entirely. Rule files must have the extension
+      <filename>.rules</filename>; other extensions are ignored.</para>
+
+      <para>Every line in the rules file contains at least one key-value pair.
+      Except for empty lines or lines beginning with <literal>#</literal>, which are ignored.
+      There are two kinds of keys: match and assignment.
+      If all match keys match against their values, the rule gets applied and the
+      assignment keys get the specified values assigned.</para>
+
+      <para>A matching rule may rename a network interface, add symlinks
+      pointing to the device node, or run a specified program as part of
+      the event handling.</para>
+
+      <para>A rule consists of a comma-separated list of one or more key-value pairs.
+      Each key has a distinct operation, depending on the used operator. Valid
+      operators are:</para>
+      <variablelist>
+        <varlistentry>
+          <term><literal>==</literal></term>
+          <listitem>
+            <para>Compare for equality.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><literal>!=</literal></term>
+          <listitem>
+            <para>Compare for inequality.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><literal>=</literal></term>
+          <listitem>
+            <para>Assign a value to a key. Keys that represent a list are reset
+            and only this single value is assigned.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><literal>+=</literal></term>
+          <listitem>
+            <para>Add the value to a key that holds a list of entries.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><literal>-=</literal></term>
+          <listitem>
+            <para>Remove the value from a key that holds a list of entries.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><literal>:=</literal></term>
+          <listitem>
+            <para>Assign  a  value  to  a key finally; disallow any later changes.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>The following key names can be used to match against device properties.
+      Some of the keys also match against properties of the parent devices in sysfs,
+      not only the device that has generated the event. If multiple keys that match
+      a parent device are specified in a single rule, all these keys must match at
+      one and the same parent device.</para>
+      <variablelist class='udev-directives'>
+        <varlistentry>
+          <term><varname>ACTION</varname></term>
+          <listitem>
+            <para>Match the name of the event action.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>DEVPATH</varname></term>
+          <listitem>
+            <para>Match the devpath of the event device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>KERNEL</varname></term>
+          <listitem>
+            <para>Match the name of the event device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>NAME</varname></term>
+          <listitem>
+            <para>Match the name of a network interface. It can be used once the
+            NAME key has been set in one of the preceding rules.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SYMLINK</varname></term>
+          <listitem>
+            <para>Match the name of a symlink targeting the node. It can
+            be used once a SYMLINK key has been set in one of the preceding
+            rules. There may be multiple symlinks; only one needs to match.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SUBSYSTEM</varname></term>
+          <listitem>
+            <para>Match the subsystem of the event device.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><varname>DRIVER</varname></term>
+          <listitem>
+            <para>Match the driver name of the event device. Only set this key for devices
+            which are bound to a driver at the time the event is generated.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><varname>ATTR{<replaceable>filename</replaceable>}</varname></term>
+          <listitem>
+            <para>Match sysfs attribute values of the event device. Trailing
+            whitespace in the attribute values is ignored unless the specified match
+            value itself contains trailing whitespace.
+            </para>
+          </listitem>
+          <term><varname>SYSCTL{<replaceable>kernel parameter</replaceable>}</varname></term>
+          <listitem>
+            <para>Match a kernel parameter value.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>KERNELS</varname></term>
+          <listitem>
+            <para>Search the devpath upwards for a matching device name.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SUBSYSTEMS</varname></term>
+          <listitem>
+            <para>Search the devpath upwards for a matching device subsystem name.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>DRIVERS</varname></term>
+          <listitem>
+            <para>Search the devpath upwards for a matching device driver name.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>ATTRS{<replaceable>filename</replaceable>}</varname></term>
+          <listitem>
+            <para>Search the devpath upwards for a device with matching sysfs attribute values.
+            If multiple <varname>ATTRS</varname> matches are specified, all of them
+            must match on the same device. Trailing whitespace in the attribute values is ignored
+            unless the specified match value itself contains trailing whitespace.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>TAGS</varname></term>
+          <listitem>
+            <para>Search the devpath upwards for a device with matching tag.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>ENV{<replaceable>key</replaceable>}</varname></term>
+          <listitem>
+            <para>Match against a device property value.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>TAG</varname></term>
+          <listitem>
+            <para>Match against a device tag.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>TEST{<replaceable>octal mode mask</replaceable>}</varname></term>
+          <listitem>
+            <para>Test the existence of a file. An octal mode mask can be specified
+            if needed.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>PROGRAM</varname></term>
+          <listitem>
+            <para>Execute a program to determine whether there
+            is a match; the key is true if the program returns
+            successfully. The device properties are made available to the
+            executed program in the environment. The program's standard output
+            is available in the <varname>RESULT</varname> key.</para>
+            <para>This can only be used for very short-running foreground tasks. For details,
+            see <varname>RUN</varname>.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>RESULT</varname></term>
+          <listitem>
+            <para>Match the returned string of the last <varname>PROGRAM</varname> call.
+            This key can be used in the same or in any later rule after a
+            <varname>PROGRAM</varname> call.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>Most of the fields support shell glob pattern matching and
+      alternate patterns. The following special characters are supported:</para>
+      <variablelist>
+        <varlistentry>
+          <term><literal>*</literal></term>
+          <listitem>
+            <para>Matches zero or more characters.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><literal>?</literal></term>
+          <listitem>
+            <para>Matches any single character.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><literal>[]</literal></term>
+          <listitem>
+            <para>Matches any single character specified within the brackets. For
+            example, the pattern string <literal>tty[SR]</literal>
+            would match either <literal>ttyS</literal> or <literal>ttyR</literal>.
+            Ranges are also supported via the <literal>-</literal> character.
+            For example, to match on the range of all digits, the pattern
+            <literal>[0-9]</literal> could be used. If the first character
+            following the <literal>[</literal> is a <literal>!</literal>,
+            any characters not enclosed are matched.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><literal>|</literal></term>
+          <listitem>
+            <para>Separates alternative patterns. For example, the pattern string
+            <literal>abc|x*</literal> would match either <literal>abc</literal>
+            or <literal>x*</literal>.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>The following keys can get values assigned:</para>
+      <variablelist class='udev-directives'>
+        <varlistentry>
+          <term><varname>NAME</varname></term>
+          <listitem>
+            <para>The name to use for a network interface. See
+            <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+            for a higher-level mechanism for setting the interface name.
+            The name of a device node cannot be changed by udev, only additional
+            symlinks can be created.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SYMLINK</varname></term>
+          <listitem>
+            <para>The name of a symlink targeting the node. Every matching rule adds
+            this value to the list of symlinks to be created.</para>
+            <para>The set of characters to name a symlink is limited. Allowed
+            characters are <literal>0-9A-Za-z#+-.:=@_/</literal>, valid UTF-8 character
+            sequences, and <literal>\x00</literal> hex encoding. All other
+            characters are replaced by a <literal>_</literal> character.</para>
+            <para>Multiple symlinks may be specified by separating the names by the
+            space character. In case multiple devices claim the same name, the link
+            always points to the device with the highest link_priority. If the current
+            device goes away, the links are re-evaluated and the device with the
+            next highest link_priority becomes the owner of the link. If no
+            link_priority is specified, the order of the devices (and which one of
+            them owns the link) is undefined.</para>
+            <para>Symlink names must never conflict with the kernel's default device
+            node names, as that would result in unpredictable behavior.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>OWNER</varname>, <varname>GROUP</varname>, <varname>MODE</varname></term>
+          <listitem>
+            <para>The permissions for the device node. Every specified value overrides
+            the compiled-in default value.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SECLABEL{<replaceable>module</replaceable>}</varname></term>
+          <listitem>
+            <para>Applies the specified Linux Security Module label to the device node.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>ATTR{<replaceable>key</replaceable>}</varname></term>
+          <listitem>
+            <para>The value that should be written to a sysfs attribute of the
+            event device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>SYSCTL{<replaceable>kernel parameter</replaceable>}</varname></term>
+          <listitem>
+            <para>The value that should be written to kernel parameter.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>ENV{<replaceable>key</replaceable>}</varname></term>
+          <listitem>
+            <para>Set a device property value. Property names with a leading <literal>.</literal>
+            are neither stored in the database nor exported to events or
+            external tools (run by, for example, the <varname>PROGRAM</varname>
+            match key).</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>TAG</varname></term>
+          <listitem>
+            <para>Attach a tag to a device. This is used to filter events for users
+            of libudev's monitor functionality, or to enumerate a group of tagged
+            devices. The implementation can only work efficiently if only a few
+            tags are attached to a device. It is only meant to be used in
+            contexts with specific device filter requirements, and not as a
+            general-purpose flag. Excessive use might result in inefficient event
+            handling.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>RUN{<replaceable>type</replaceable>}</varname></term>
+          <listitem>
+            <para>Add a program to the list of programs to be executed after
+            processing all the rules for a specific event, depending on
+            <literal>type</literal>:</para>
+            <variablelist>
+              <varlistentry>
+                <term><literal>program</literal></term>
+                <listitem>
+                  <para>Execute an external program specified as the assigned
+                  value. If no absolute path is given, the program is expected
+                  to live in <filename>/usr/lib/udev</filename>; otherwise, the
+                  absolute path must be specified.</para>
+                  <para>This is the default if no <replaceable>type</replaceable>
+                  is specified.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><literal>builtin</literal></term>
+                <listitem>
+                  <para>As <varname>program</varname>, but use one of the
+                  built-in programs rather than an external one.</para>
+                </listitem>
+              </varlistentry>
+            </variablelist>
+            <para>The program name and following arguments are separated by spaces.
+            Single quotes can be used to specify arguments with spaces.</para>
+            <para>This can only be used for very short-running foreground tasks. Running an
+            event process for a long period of time may block all further events for
+            this or a dependent device.</para>
+            <para>Starting daemons or other long-running processes is not appropriate
+            for udev; the forked processes, detached or not, will be unconditionally
+            killed after the event handling has finished.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>LABEL</varname></term>
+          <listitem>
+            <para>A named label to which a <varname>GOTO</varname> may jump.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>GOTO</varname></term>
+          <listitem>
+            <para>Jumps to the next <varname>LABEL</varname> with a matching name.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>IMPORT{<replaceable>type</replaceable>}</varname></term>
+          <listitem>
+            <para>Import a set of variables as device properties,
+            depending on <literal>type</literal>:</para>
+            <variablelist>
+              <varlistentry>
+                <term><literal>program</literal></term>
+                <listitem>
+                  <para>Execute an external program specified as the assigned
+                  value and, if it returns successfully,
+                  import its output, which must be in environment key
+                  format. Path specification, command/argument separation,
+                  and quoting work like in <varname>RUN</varname>.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><literal>builtin</literal></term>
+                <listitem>
+                  <para>Similar to <literal>program</literal>, but use one of the
+                  built-in programs rather than an external one.</para>
+                </listitem>
+              </varlistentry>
+             <varlistentry>
+                <term><literal>file</literal></term>
+                <listitem>
+                  <para>Import a text file specified as the assigned value, the content
+                  of which must be in environment key format.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><literal>db</literal></term>
+                <listitem>
+                  <para>Import a single property specified as the assigned value from the
+                  current device database. This works only if the database is already populated
+                  by an earlier event.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><literal>cmdline</literal></term>
+                <listitem>
+                  <para>Import a single property from the kernel command line. For simple flags
+                  the value of the property is set to <literal>1</literal>.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><literal>parent</literal></term>
+                <listitem>
+                  <para>Import the stored keys from the parent device by reading
+                  the database entry of the parent device. The value assigned to
+                  <option>IMPORT{parent}</option> is used as a filter of key names
+                  to import (with the same shell glob pattern matching used for
+                  comparisons).</para>
+                </listitem>
+              </varlistentry>
+            </variablelist>
+            <para>This can only be used for very short-running foreground tasks. For details
+            see <option>RUN</option>.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><varname>OPTIONS</varname></term>
+          <listitem>
+            <para>Rule and device options:</para>
+            <variablelist class='udev-directives'>
+              <varlistentry>
+                <term><option>link_priority=<replaceable>value</replaceable></option></term>
+                <listitem>
+                  <para>Specify the priority of the created symlinks. Devices with higher
+                  priorities overwrite existing symlinks of other devices. The default is 0.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><option>string_escape=<replaceable>none|replace</replaceable></option></term>
+                <listitem>
+                  <para>Usually, control and other possibly unsafe characters are replaced
+                  in strings used for device naming. The mode of replacement can be specified
+                  with this option.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><option>static_node=</option></term>
+                <listitem>
+                  <para>Apply the permissions specified in this rule to the
+                  static device node with the specified name. Also, for every
+                  tag specified in this rule, create a symlink
+                  in the directory
+                  <filename>/run/udev/static_node-tags/<replaceable>tag</replaceable></filename>
+                  pointing at the static device node with the specified name.
+                  Static device node creation is performed by systemd-tmpfiles
+                  before systemd-udevd is started. The static nodes might not
+                  have a corresponding kernel device; they are used to trigger
+                  automatic kernel module loading when they are accessed.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><option>watch</option></term>
+                <listitem>
+                  <para>Watch the device node with inotify; when the node is
+                  closed after being opened for writing, a change uevent is
+                  synthesized.</para>
+                </listitem>
+              </varlistentry>
+              <varlistentry>
+                <term><option>nowatch</option></term>
+                <listitem>
+                  <para>Disable the watching of a device node with inotify.</para>
+                </listitem>
+              </varlistentry>
+            </variablelist>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>The <varname>NAME</varname>, <varname>SYMLINK</varname>,
+      <varname>PROGRAM</varname>, <varname>OWNER</varname>,
+      <varname>GROUP</varname>, <varname>MODE</varname>, and
+      <varname>RUN</varname> fields support simple string substitutions.
+      The <varname>RUN</varname> substitutions are performed after all rules
+      have been processed, right before the program is executed, allowing for
+      the use of device properties set by earlier matching rules. For all other
+      fields, substitutions are performed while the individual rule is being
+      processed. The available substitutions are:</para>
+      <variablelist class='udev-directives'>
+        <varlistentry>
+          <term><option>$kernel</option>, <option>%k</option></term>
+          <listitem>
+            <para>The kernel name for this device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$number</option>, <option>%n</option></term>
+          <listitem>
+            <para>The kernel number for this device. For example,
+              <literal>sda3</literal> has kernel number <literal>3</literal>.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$devpath</option>, <option>%p</option></term>
+          <listitem>
+            <para>The devpath of the device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$id</option>, <option>%b</option></term>
+          <listitem>
+            <para>The name of the device matched while searching the devpath
+              upwards for <option>SUBSYSTEMS</option>, <option>KERNELS</option>,
+              <option>DRIVERS</option>, and <option>ATTRS</option>.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$driver</option></term>
+          <listitem>
+            <para>The driver name of the device matched while searching the
+              devpath upwards for <option>SUBSYSTEMS</option>,
+              <option>KERNELS</option>, <option>DRIVERS</option>, and
+              <option>ATTRS</option>.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$attr{<replaceable>file</replaceable>}</option>, <option>%s{<replaceable>file</replaceable>}</option></term>
+          <listitem>
+            <para>The value of a sysfs attribute found at the device where
+              all keys of the rule have matched. If the matching device does not
+              have such an attribute, and a previous <option>KERNELS</option>,
+              <option>SUBSYSTEMS</option>, <option>DRIVERS</option>, or
+              <option>ATTRS</option> test selected a parent device, then the
+              attribute from that parent device is used.
+            </para>
+            <para>If the attribute is a symlink, the last element of the
+              symlink target is returned as the value.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$env{<replaceable>key</replaceable>}</option>, <option>%E{<replaceable>key</replaceable>}</option></term>
+          <listitem>
+            <para>A device property value.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$major</option>, <option>%M</option></term>
+          <listitem>
+            <para>The kernel major number for the device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$minor</option>, <option>%m</option></term>
+          <listitem>
+            <para>The kernel minor number for the device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$result</option>, <option>%c</option></term>
+          <listitem>
+            <para>The string returned by the external program requested with
+            <varname>PROGRAM</varname>.
+            A single part of the string, separated by a space character, may be selected
+            by specifying the part number as an attribute: <literal>%c{N}</literal>.
+            If the number is followed by the <literal>+</literal> character, this part plus all remaining parts
+            of the result string are substituted: <literal>%c{N+}</literal>.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$parent</option>, <option>%P</option></term>
+          <listitem>
+            <para>The node name of the parent device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$name</option></term>
+          <listitem>
+            <para>The current name of the device. If not changed by a rule, it is the
+            name of the kernel device.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$links</option></term>
+          <listitem>
+            <para>A space-separated list of the current symlinks. The value is
+            only set during a remove event or if an earlier rule assigned a value.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$root</option>, <option>%r</option></term>
+          <listitem>
+            <para>The udev_root value.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$sys</option>, <option>%S</option></term>
+          <listitem>
+            <para>The sysfs mount point.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$devnode</option>, <option>%N</option></term>
+          <listitem>
+            <para>The name of the device node.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>%%</option></term>
+          <listitem>
+          <para>The <literal>%</literal> character itself.</para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><option>$$</option></term>
+          <listitem>
+          <para>The <literal>$</literal> character itself.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry>
+        <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum>
+      </citerefentry>,
+      <citerefentry>
+        <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum>
+      </citerefentry>,
+      <citerefentry>
+        <refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum>
+      </citerefentry>
+    </para>
+  </refsect1>
+</refentry>
diff --git a/src/grp-udev/udevadm/udevadm.xml b/src/grp-udev/udevadm/udevadm.xml
new file mode 100644
index 0000000000..8c1abd2770
--- /dev/null
+++ b/src/grp-udev/udevadm/udevadm.xml
@@ -0,0 +1,576 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<refentry id="udevadm">
+  <refentryinfo>
+    <title>udevadm</title>
+    <productname>systemd</productname>
+    <authorgroup>
+      <author>
+        <contrib>Developer</contrib>
+        <firstname>Kay</firstname>
+        <surname>Sievers</surname>
+        <email>kay@vrfy.org</email>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>udevadm</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>udevadm</refname><refpurpose>udev management tool</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>udevadm</command>
+        <arg><option>--debug</option></arg>
+        <arg><option>--version</option></arg>
+        <arg><option>--help</option></arg>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm info <replaceable>options</replaceable></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm trigger <optional>options</optional></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm settle <optional>options</optional></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm control <replaceable>command</replaceable></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm monitor <optional>options</optional></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm test <optional>options</optional> <replaceable>devpath</replaceable></command>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>udevadm test-builtin <optional>options</optional> <replaceable>command</replaceable> <replaceable>devpath</replaceable></command>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1><title>Description</title>
+    <para><command>udevadm</command> expects a command and command
+    specific options.  It controls the runtime behavior of
+    <command>systemd-udevd</command>, requests kernel events, manages
+    the event queue, and provides simple debugging mechanisms.</para>
+  </refsect1>
+
+  <refsect1><title>Options</title>
+    <variablelist>
+      <varlistentry>
+        <term><option>--debug</option></term>
+        <listitem>
+          <para>Print debug messages to standard error.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>--version</option></term>
+        <listitem>
+          <para>Print version number.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><option>-h</option></term>
+        <term><option>--help</option></term>
+        <listitem>
+          <para>Print help text.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+
+    <refsect2><title>udevadm info
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <arg choice="opt"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg>
+    </title>
+
+      <para>Queries the udev database for device information
+      stored in the udev database. It can also query the properties
+      of a device from its sysfs representation to help creating udev
+      rules that match this device.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-q</option></term>
+          <term><option>--query=<replaceable>TYPE</replaceable></option></term>
+          <listitem>
+            <para>Query the database for the specified type of device
+            data. It needs the <option>--path</option> or
+            <option>--name</option> to identify the specified device.
+            Valid <replaceable>TYPE</replaceable>s are:
+            <constant>name</constant>, <constant>symlink</constant>,
+            <constant>path</constant>, <constant>property</constant>,
+            <constant>all</constant>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-p</option></term>
+          <term><option>--path=<replaceable>DEVPATH</replaceable></option></term>
+          <listitem>
+            <para>The <filename>/sys</filename> path of the device to
+            query, e.g.
+            <filename><optional>/sys</optional>/class/block/sda</filename>.
+            Note that this option usually is not very useful, since
+            <command>udev</command> can guess the type of the
+            argument, so <command>udevadm
+            --devpath=/class/block/sda</command> is equivalent to
+            <command>udevadm /sys/class/block/sda</command>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-n</option></term>
+          <term><option>--name=<replaceable>FILE</replaceable></option></term>
+          <listitem>
+            <para>The name of the device node or a symlink to query,
+            e.g. <filename><optional>/dev</optional>/sda</filename>.
+            Note that this option usually is not very useful, since
+            <command>udev</command> can guess the type of the
+            argument, so <command>udevadm --name=sda</command> is
+            equivalent to <command>udevadm /dev/sda</command>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-r</option></term>
+          <term><option>--root</option></term>
+          <listitem>
+            <para>Print absolute paths in <command>name</command> or <command>symlink</command>
+            query.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-a</option></term>
+          <term><option>--attribute-walk</option></term>
+          <listitem>
+            <para>Print all sysfs properties of the specified device that can be used
+            in udev rules to match the specified device. It prints all devices
+            along the chain, up to the root of sysfs that can be used in udev rules.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-x</option></term>
+          <term><option>--export</option></term>
+          <listitem>
+            <para>Print output as key/value pairs. Values are enclosed in single quotes.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-P</option></term>
+          <term><option>--export-prefix=<replaceable>NAME</replaceable></option></term>
+          <listitem>
+            <para>Add a prefix to the key name of exported values.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-d</option></term>
+          <term><option>--device-id-of-file=<replaceable>FILE</replaceable></option></term>
+          <listitem>
+            <para>Print major/minor numbers of the underlying device, where the file
+            lives on.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-e</option></term>
+          <term><option>--export-db</option></term>
+          <listitem>
+            <para>Export the content of the udev database.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-c</option></term>
+          <term><option>--cleanup-db</option></term>
+          <listitem>
+            <para>Cleanup the udev database.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>--version</option></term>
+          <listitem>
+            <para>Print version.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>In addition, an optional positional argument can be used
+      to specify a device name or a sys path. It must start with
+      <filename>/dev</filename> or <filename>/sys</filename>
+      respectively.</para>
+    </refsect2>
+
+    <refsect2><title>udevadm trigger
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <arg choice="opt" rep="repeat"><replaceable>devpath</replaceable>|<replaceable>file</replaceable></arg></title>
+      <para>Request device events from the kernel. Primarily used to replay events at system coldplug time.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-v</option></term>
+          <term><option>--verbose</option></term>
+          <listitem>
+            <para>Print the list of devices which will be triggered.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-n</option></term>
+          <term><option>--dry-run</option></term>
+          <listitem>
+            <para>Do not actually trigger the event.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-t</option></term>
+          <term><option>--type=<replaceable>TYPE</replaceable></option></term>
+          <listitem>
+            <para>Trigger a specific type of devices. Valid types are:
+            <command>devices</command>, <command>subsystems</command>.
+            The default value is <command>devices</command>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-c</option></term>
+          <term><option>--action=<replaceable>ACTION</replaceable></option></term>
+          <listitem>
+            <para>Type of event to be triggered. The default value is
+            <command>change</command>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-s</option></term>
+          <term><option>--subsystem-match=<replaceable>SUBSYSTEM</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices which belong to a
+            matching subsystem. This option can be specified multiple
+            times and supports shell style pattern matching.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-S</option></term>
+          <term><option>--subsystem-nomatch=<replaceable>SUBSYSTEM</replaceable></option></term>
+          <listitem>
+            <para>Do not trigger events for devices which belong to a matching subsystem. This option
+            can be specified multiple times and supports shell style pattern matching.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-a</option></term>
+          <term><option>--attr-match=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices with a matching sysfs
+            attribute. If a value is specified along with the
+            attribute name, the content of the attribute is matched
+            against the given value using shell style pattern
+            matching. If no value is specified, the existence of the
+            sysfs attribute is checked. This option can be specified
+            multiple times.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-A</option></term>
+          <term><option>--attr-nomatch=<replaceable>ATTRIBUTE</replaceable>=<replaceable>VALUE</replaceable></option></term>
+          <listitem>
+            <para>Do not trigger events for devices with a matching
+            sysfs attribute. If a value is specified along with the
+            attribute name, the content of the attribute is matched
+            against the given value using shell style pattern
+            matching. If no value is specified, the existence of the
+            sysfs attribute is checked. This option can be specified
+            multiple times.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-p</option></term>
+          <term><option>--property-match=<replaceable>PROPERTY</replaceable>=<replaceable>VALUE</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices with a matching property
+            value. This option can be specified multiple times and
+            supports shell style pattern matching.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-g</option></term>
+          <term><option>--tag-match=<replaceable>PROPERTY</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices with a matching tag. This
+            option can be specified multiple times.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-y</option></term>
+          <term><option>--sysname-match=<replaceable>PATH</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices with a matching sys
+            device path. This option can be specified multiple times
+            and supports shell style pattern matching.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>--name-match=<replaceable>NAME</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for devices with a matching
+            device path. This option can be specified multiple
+            times.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-b</option></term>
+          <term><option>--parent-match=<replaceable>SYSPATH</replaceable></option></term>
+          <listitem>
+            <para>Trigger events for all children of a given
+            device.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+
+      <para>In addition, optional positional arguments can be used
+      to specify device names or sys paths. They must start with
+      <filename>/dev</filename> or <filename>/sys</filename>
+      respectively.</para>
+    </refsect2>
+
+    <refsect2><title>udevadm settle
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+    </title>
+      <para>Watches the udev event queue, and exits if all current events are handled.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-t</option></term>
+          <term><option>--timeout=<replaceable>SECONDS</replaceable></option></term>
+          <listitem>
+            <para>Maximum number of seconds to wait for the event
+            queue to become empty. The default value is 120 seconds. A
+            value of 0 will check if the queue is empty and always
+            return immediately.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-E</option></term>
+          <term><option>--exit-if-exists=<replaceable>FILE</replaceable></option></term>
+          <listitem>
+            <para>Stop waiting if file exists.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+
+    <refsect2><title>udevadm control <replaceable>command</replaceable></title>
+      <para>Modify the internal state of the running udev daemon.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-x</option></term>
+          <term><option>--exit</option></term>
+          <listitem>
+            <para>Signal and wait for systemd-udevd to exit.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-l</option></term>
+          <term><option>--log-priority=<replaceable>value</replaceable></option></term>
+          <listitem>
+            <para>Set the internal log level of
+            <filename>systemd-udevd</filename>. Valid values are the
+            numerical syslog priorities or their textual
+            representations: <option>emerg</option>,
+            <option>alert</option>, <option>crit</option>,
+            <option>err</option>, <option>warning</option>,
+            <option>notice</option>, <option>info</option>, and
+            <option>debug</option>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-s</option></term>
+          <term><option>--stop-exec-queue</option></term>
+          <listitem>
+            <para>Signal systemd-udevd to stop executing new events. Incoming events
+            will be queued.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-S</option></term>
+          <term><option>--start-exec-queue</option></term>
+          <listitem>
+            <para>Signal systemd-udevd to enable the execution of events.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-R</option></term>
+          <term><option>--reload</option></term>
+          <listitem>
+            <para>Signal systemd-udevd to reload the rules files and other databases like the kernel
+            module index. Reloading rules and databases does not apply any changes to already
+            existing devices; the new configuration will only be applied to new events.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-p</option></term>
+          <term><option>--property=<replaceable>KEY</replaceable>=<replaceable>value</replaceable></option></term>
+          <listitem>
+            <para>Set a global property for all events.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-m</option></term>
+          <term><option>--children-max=</option><replaceable>value</replaceable></term>
+          <listitem>
+            <para>Set the maximum number of events, systemd-udevd will handle at the
+            same time.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>--timeout=</option><replaceable>seconds</replaceable></term>
+          <listitem>
+            <para>The maximum number of seconds to wait for a reply from systemd-udevd.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+
+    <refsect2><title>udevadm monitor
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+    </title>
+      <para>Listens to the kernel uevents and events sent out by a udev rule
+      and prints the devpath of the event to the console. It can be used to analyze the
+      event timing, by comparing the timestamps of the kernel uevent and the udev event.
+      </para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-k</option></term>
+          <term><option>--kernel</option></term>
+          <listitem>
+            <para>Print the kernel uevents.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-u</option></term>
+          <term><option>--udev</option></term>
+          <listitem>
+            <para>Print the udev event after the rule processing.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-p</option></term>
+          <term><option>--property</option></term>
+          <listitem>
+            <para>Also print the properties of the event.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-s</option></term>
+          <term><option>--subsystem-match=<replaceable>string[/string]</replaceable></option></term>
+          <listitem>
+            <para>Filter events by subsystem[/devtype]. Only udev events with a matching subsystem value will pass.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-t</option></term>
+          <term><option>--tag-match=<replaceable>string</replaceable></option></term>
+          <listitem>
+            <para>Filter events by property. Only udev events with a given tag attached will pass.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+
+    <refsect2><title>udevadm test
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <arg><replaceable>devpath</replaceable></arg>
+    </title>
+      <para>Simulate a udev event run for the given device, and print debug output.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-a</option></term>
+          <term><option>--action=<replaceable>string</replaceable></option></term>
+          <listitem>
+            <para>The action string.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-N</option></term>
+          <term><option>--resolve-names=<constant>early</constant>|<constant>late</constant>|<constant>never</constant></option></term>
+          <listitem>
+            <para>Specify when udevadm should resolve names of users
+            and groups.  When set to <constant>early</constant> (the
+            default), names will be resolved when the rules are
+            parsed. When set to <constant>late</constant>, names will
+            be resolved for every event. When set to
+            <constant>never</constant>, names will never be resolved
+            and all devices will be owned by root.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+
+    <refsect2><title>udevadm test-builtin
+      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <arg><replaceable>command</replaceable></arg>
+      <arg><replaceable>devpath</replaceable></arg>
+    </title>
+      <para>Run a built-in command <replaceable>COMMAND</replaceable>
+      for device <replaceable>DEVPATH</replaceable>, and print debug
+      output.</para>
+      <variablelist>
+        <varlistentry>
+          <term><option>-h</option></term>
+          <term><option>--help</option></term>
+          <listitem>
+            <para>Print help text.</para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
+    </refsect2>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para><citerefentry>
+        <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
+    </citerefentry>,
+    <citerefentry>
+        <refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum>
+    </citerefentry></para>
+  </refsect1>
+</refentry>