Adding upstream version 252.22.upstream/252.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 326 insertions, 0 deletions

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+<?xml version='1.0'?> <!--*-nxml-*-->
+<!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-or-later -->
+
+<refentry id="timedatectl" conditional='ENABLE_TIMEDATECTL'
+  xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>timedatectl</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>timedatectl</refentrytitle>
+    <manvolnum>1</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>timedatectl</refname>
+    <refpurpose>Control the system time and date</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>timedatectl</command>
+      <arg choice="opt" rep="repeat">OPTIONS</arg>
+      <arg choice="req">COMMAND</arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><command>timedatectl</command> may be used to query and change the system clock and its settings,
+    and enable or disable time synchronization services.</para>
+
+    <para>Use
+    <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+    to initialize the system time zone for mounted (but not booted)
+    system images.</para>
+
+    <para><command>timedatectl</command> may be used to show the current status of time synchronization
+    services, for example
+    <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+    </para>
+
+  </refsect1>
+
+  <refsect1>
+    <title>Commands</title>
+
+    <para>The following commands are understood:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term><command>status</command></term>
+
+        <listitem><para>Show current settings of the system clock and RTC, including whether network time
+        synchronization is active. If no command is specified, this is the implied default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>show</command></term>
+
+        <listitem><para>Show the same information as <option>status</option>, but in machine readable form.
+        This command is intended to be used whenever computer-parsable output is required.
+        Use <option>status</option> if you are looking for formatted human-readable output.</para>
+        <para>By default, empty properties are suppressed. Use <option>--all</option> to show those too.
+        To select specific properties to show, use <option>--property=</option>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>set-time [TIME]</command></term>
+
+        <listitem><para>Set the system clock to the specified time.
+        This will also update the RTC time accordingly. The time may
+        be specified in the format "2012-10-30
+        18:17:16".</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>set-timezone [TIMEZONE]</command></term>
+
+        <listitem><para>Set the system time zone to the specified
+        value. Available timezones can be listed with
+        <command>list-timezones</command>. If the RTC is configured to
+        be in the local time, this will also update the RTC time. This
+        call will alter the <filename>/etc/localtime</filename>
+        symlink. See
+        <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+        for more information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>list-timezones</command></term>
+
+        <listitem><para>List available time zones, one per line.
+        Entries from the list can be set as the system timezone with
+        <command>set-timezone</command>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>set-local-rtc [BOOL]</command></term>
+
+        <listitem><para>Takes a boolean argument. If
+        <literal>0</literal>, the system is configured to maintain the
+        RTC in universal time. If <literal>1</literal>, it will
+        maintain the RTC in local time instead. Note that maintaining
+        the RTC in the local timezone is not fully supported and will
+        create various problems with time zone changes and daylight
+        saving adjustments. If at all possible, keep the RTC in UTC
+        mode. Note that invoking this will also synchronize the RTC
+        from the system clock, unless
+        <option>--adjust-system-clock</option> is passed (see above).
+        This command will change the 3rd line of
+        <filename>/etc/adjtime</filename>, as documented in
+        <citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><command>set-ntp [BOOL]</command></term>
+
+        <listitem><para>Takes a boolean argument. Controls whether network time synchronization is active and
+        enabled (if available). If the argument is true, this enables and starts the first existing network
+        synchronization service. If the argument is false, then this disables and stops the known network
+        synchronization services. The way that the list of services is built is described in
+        <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+        </para></listitem>
+      </varlistentry>
+
+    </variablelist>
+
+    <refsect2>
+      <title>systemd-timesyncd Commands</title>
+
+      <para>The following commands are specific to
+      <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+      </para>
+
+      <variablelist>
+        <varlistentry>
+          <term><command>timesync-status</command></term>
+
+          <listitem><para>Show current status of
+          <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+          If <option>--monitor</option> is specified, then this will monitor the status updates.</para></listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><command>show-timesync</command></term>
+
+          <listitem><para>Show the same information as <option>timesync-status</option>, but in machine readable form.
+          This command is intended to be used whenever computer-parsable output is required.
+          Use <option>timesync-status</option> if you are looking for formatted human-readable output.</para>
+          <para>By default, empty properties are suppressed. Use <option>--all</option> to show those too.
+          To select specific properties to show, use <option>--property=</option>.</para></listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><command>ntp-servers <replaceable>INTERFACE</replaceable> <replaceable>SERVER</replaceable>…</command></term>
+
+          <listitem><para>Set the interface specific NTP servers. This command can be used only when the
+          interface is managed by <command>systemd-networkd</command>.</para></listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><command>revert <replaceable>INTERFACE</replaceable></command></term>
+
+          <listitem><para>Revert the interface specific NTP servers. This command can be used only when
+          the interface is managed by <command>systemd-networkd</command>.</para></listitem>
+        </varlistentry>
+      </variablelist>
+
+    </refsect2>
+
+  </refsect1>
+
+  <refsect1>
+    <title>Options</title>
+
+    <para>The following options are understood:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term><option>--no-ask-password</option></term>
+
+        <listitem><para>Do not query the user for authentication for
+        privileged operations.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--adjust-system-clock</option></term>
+
+        <listitem><para>If <command>set-local-rtc</command> is invoked
+        and this option is passed, the system clock is synchronized
+        from the RTC again, taking the new setting into account.
+        Otherwise, the RTC is synchronized from the system
+        clock.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--monitor</option></term>
+
+        <listitem><para>If <command>timesync-status</command> is invoked and this option is passed, then
+        <command>timedatectl</command> monitors the status of
+        <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+        and updates the outputs. Use <keycombo><keycap>Ctrl</keycap><keycap>C</keycap></keycombo> to terminate the
+        monitoring.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-a</option></term>
+        <term><option>--all</option></term>
+
+        <listitem><para>When showing properties of
+        <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+        show all properties regardless of whether they are set or not.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-p</option></term>
+        <term><option>--property=</option></term>
+
+        <listitem><para>When showing properties of
+        <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+        limit display to certain properties as specified as argument. If not specified, all set properties are shown.
+        The argument should be a property name, such as <literal>ServerName</literal>. If specified more than once,
+        all properties with the specified names are shown.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--value</option></term>
+
+        <listitem>
+          <para>When printing properties with <command>show-timesync</command>, only print the value, and skip the
+          property name and <literal>=</literal>.</para></listitem>
+      </varlistentry>
+
+      <xi:include href="user-system-options.xml" xpointer="host" />
+      <xi:include href="user-system-options.xml" xpointer="machine" />
+
+      <xi:include href="standard-options.xml" xpointer="help" />
+      <xi:include href="standard-options.xml" xpointer="version" />
+      <xi:include href="standard-options.xml" xpointer="no-pager" />
+    </variablelist>
+  </refsect1>
+
+  <refsect1>
+    <title>Exit status</title>
+
+    <para>On success, 0 is returned, a non-zero failure code otherwise.</para>
+  </refsect1>
+
+  <xi:include href="common-variables.xml" />
+
+  <refsect1>
+    <title>Examples</title>
+    <para>Show current settings:
+    <programlisting>$ timedatectl
+               Local time: Thu 2017-09-21 16:08:56 CEST
+           Universal time: Thu 2017-09-21 14:08:56 UTC
+                 RTC time: Thu 2017-09-21 14:08:56
+                Time zone: Europe/Warsaw (CEST, +0200)
+System clock synchronized: yes
+              NTP service: active
+          RTC in local TZ: no</programlisting>
+    </para>
+
+    <para>Enable network time synchronization:
+    <programlisting>$ timedatectl set-ntp true
+==== AUTHENTICATING FOR org.freedesktop.timedate1.set-ntp ===
+Authentication is required to control whether network time synchronization shall be enabled.
+Authenticating as: user
+Password: ********
+==== AUTHENTICATION COMPLETE ===</programlisting>
+
+    <programlisting>$ systemctl status systemd-timesyncd.service
+● systemd-timesyncd.service - Network Time Synchronization
+   Loaded: loaded (/usr/lib/systemd/system/systemd-timesyncd.service; enabled)
+   Active: active (running) since Mo 2015-03-30 14:20:38 CEST; 5s ago
+     Docs: man:systemd-timesyncd.service(8)
+ Main PID: 595 (systemd-timesyn)
+   Status: "Using Time Server 216.239.38.15:123 (time4.google.com)."
+   CGroup: /system.slice/systemd-timesyncd.service
+           └─595 /usr/lib/systemd/systemd-timesyncd
+…</programlisting>
+    </para>
+
+    <para>Show current status of
+    <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>:
+    <programlisting>$ timedatectl timesync-status
+       Server: 216.239.38.15 (time4.google.com)
+Poll interval: 1min 4s (min: 32s; max 34min 8s)
+         Leap: normal
+      Version: 4
+      Stratum: 1
+    Reference: GPS
+    Precision: 1us (-20)
+Root distance: 335us (max: 5s)
+       Offset: +316us
+        Delay: 349us
+       Jitter: 0
+ Packet count: 1
+    Frequency: -8.802ppm</programlisting>
+    </para>
+
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry project='man-pages'><refentrytitle>date</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+</refentry>