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diff --git a/man/systemd-timedated.service.xml b/man/systemd-timedated.service.xml new file mode 100644 index 0000000..112bdf3 --- /dev/null +++ b/man/systemd-timedated.service.xml @@ -0,0 +1,105 @@ +<?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="systemd-timedated.service" conditional='ENABLE_TIMEDATED'> + + <refentryinfo> + <title>systemd-timedated.service</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>systemd-timedated.service</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-timedated.service</refname> + <refname>systemd-timedated</refname> + <refpurpose>Time and date bus mechanism</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd-timedated.service</filename></para> + <para><filename>/usr/lib/systemd/systemd-timedated</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>systemd-timedated.service</filename> is a system service + that may be used as a mechanism to change the system clock and + timezone, as well as to enable/disable network time synchronization. + <filename>systemd-timedated</filename> is automatically activated + on request and terminates itself when it is unused.</para> + + <para>The tool + <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> + is a command line client to this service.</para> + + <para><filename>systemd-timedated</filename> currently offers access to + the following four settings: + <itemizedlist> + <listitem><para>The system time</para></listitem> + + <listitem><para>The system timezone</para></listitem> + + <listitem><para>A boolean controlling whether the system RTC is in local or UTC + timezone</para></listitem> + + <listitem><para>Whether the time synchronization service is enabled/started or + disabled/stopped, see next section.</para></listitem> + </itemizedlist></para> + + <para>See + <citerefentry><refentrytitle>org.freedesktop.timedate1</refentrytitle><manvolnum>5</manvolnum></citerefentry> + and + <citerefentry><refentrytitle>org.freedesktop.LogControl1</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for information about the D-Bus API.</para> + </refsect1> + + <refsect1> + <title>List of network time synchronization services</title> + + <para><command>systemd-timesyncd</command> will look for files with a <literal>.list</literal> extension + in <filename>ntp-units.d/</filename> directories. Each file is parsed as a list of unit names, one per + line. Empty lines and lines with comments (<literal>#</literal>) are ignored. Files are read from + <filename>/usr/lib/systemd/ntp-units.d/</filename> and the corresponding directories under + <filename>/etc/</filename>, <filename>/run/</filename>, <filename>/usr/local/lib/</filename>. Files in + <filename>/etc/</filename> override files with the same name in <filename>/run/</filename>, + <filename>/usr/local/lib/</filename>, and <filename>/usr/lib/</filename>. Files in + <filename>/run/</filename> override files with the same name under <filename>/usr/</filename>. Packages + should install their configuration files in <filename>/usr/lib/</filename> (distribution packages) or + <filename>/usr/local/lib/</filename> (local installs).</para> + + <example> + <title><filename>ntp-units.d/</filename> entry for <command>systemd-timesyncd</command></title> + <programlisting># /usr/lib/systemd/ntp-units.d/80-systemd-timesync.list +systemd-timesyncd.service +</programlisting> + </example> + + <para>If the environment variable <varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname> is set, + <command>systemd-timesyncd</command> will parse the contents of that variable as a colon-separated list + of unit names. When set, this variable overrides the file-based list described above.</para> + + <example> + <title>An override that specifies that <command>chronyd</command> should be used if available</title> + <programlisting>SYSTEMD_TIMEDATED_NTP_SERVICES=chronyd.service:systemd-timesyncd.service</programlisting> + </example> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-timesyncd</refentrytitle><manvolnum>8</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |