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1 | <?xml version='1.0'?> <!--*-nxml-*--> |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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4 | |
5 | <!-- | |
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6 | SPDX-License-Identifier: LGPL-2.1+ |
7 | ||
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8 | This file is part of systemd. |
9 | ||
10 | Copyright 2010 Lennart Poettering | |
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11 | --> |
12 | ||
56ba3c78 | 13 | <refentry id="systemd-timedated.service" conditional='ENABLE_TIMEDATED'> |
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15 | <refentryinfo> |
16 | <title>systemd-timedated.service</title> | |
17 | <productname>systemd</productname> | |
18 | ||
19 | <authorgroup> | |
20 | <author> | |
21 | <contrib>Developer</contrib> | |
22 | <firstname>Lennart</firstname> | |
23 | <surname>Poettering</surname> | |
24 | <email>lennart@poettering.net</email> | |
25 | </author> | |
26 | </authorgroup> | |
27 | </refentryinfo> | |
28 | ||
29 | <refmeta> | |
30 | <refentrytitle>systemd-timedated.service</refentrytitle> | |
31 | <manvolnum>8</manvolnum> | |
32 | </refmeta> | |
33 | ||
34 | <refnamediv> | |
35 | <refname>systemd-timedated.service</refname> | |
36 | <refname>systemd-timedated</refname> | |
37 | <refpurpose>Time and date bus mechanism</refpurpose> | |
38 | </refnamediv> | |
39 | ||
40 | <refsynopsisdiv> | |
41 | <para><filename>systemd-timedated.service</filename></para> | |
12b42c76 | 42 | <para><filename>/usr/lib/systemd/systemd-timedated</filename></para> |
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43 | </refsynopsisdiv> |
44 | ||
45 | <refsect1> | |
46 | <title>Description</title> | |
47 | ||
48 | <para><filename>systemd-timedated</filename> is a system service | |
49 | that may be used as a mechanism to change the system clock and | |
50 | timezone, as well as to enable/disable NTP time synchronization. | |
51 | <filename>systemd-timedated</filename> is automatically activated | |
52 | on request and terminates itself when it is unused.</para> | |
53 | ||
54 | <para>The tool | |
55 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
56 | is a command line client to this service.</para> | |
57 | ||
58 | <para>See the <ulink | |
28a0ad81 | 59 | url="https://www.freedesktop.org/wiki/Software/systemd/timedated"> |
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60 | developer documentation</ulink> for information about the APIs |
61 | <filename>systemd-timedated</filename> provides.</para> | |
62 | </refsect1> | |
63 | ||
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64 | <refsect1> |
65 | <title>Environment</title> | |
66 | ||
67 | <variablelist class='environment-variables'> | |
68 | <varlistentry> | |
69 | <term><varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname></term> | |
70 | ||
71 | <listitem><para>Colon-separated list of unit names of NTP client services. | |
72 | If not set, then | |
73 | <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
74 | is used. See the entries of NTP related commands of | |
75 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
76 | for details about this.</para> | |
77 | ||
78 | <para>Example: | |
79 | <programlisting>SYSTEMD_TIMEDATED_NTP_SERVICES=ntpd.service:chronyd.service:systemd-timesyncd.service</programlisting> | |
80 | </para></listitem> | |
81 | </varlistentry> | |
82 | </variablelist> | |
83 | </refsect1> | |
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84 | <refsect1> |
85 | <title>See Also</title> | |
86 | <para> | |
87 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
88 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
89 | <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
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90 | <citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
91 | <citerefentry><refentrytitle>systemd-timesyncd</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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92 | </para> |
93 | </refsect1> | |
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94 | |
95 | </refentry> |