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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 | <!-- | |
572eb058 | 6 | SPDX-License-Identifier: LGPL-2.1+ |
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7 | --> |
8 | ||
56ba3c78 | 9 | <refentry id="systemd-timedated.service" conditional='ENABLE_TIMEDATED'> |
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11 | <refentryinfo> |
12 | <title>systemd-timedated.service</title> | |
13 | <productname>systemd</productname> | |
14 | ||
15 | <authorgroup> | |
16 | <author> | |
17 | <contrib>Developer</contrib> | |
18 | <firstname>Lennart</firstname> | |
19 | <surname>Poettering</surname> | |
20 | <email>lennart@poettering.net</email> | |
21 | </author> | |
22 | </authorgroup> | |
23 | </refentryinfo> | |
24 | ||
25 | <refmeta> | |
26 | <refentrytitle>systemd-timedated.service</refentrytitle> | |
27 | <manvolnum>8</manvolnum> | |
28 | </refmeta> | |
29 | ||
30 | <refnamediv> | |
31 | <refname>systemd-timedated.service</refname> | |
32 | <refname>systemd-timedated</refname> | |
33 | <refpurpose>Time and date bus mechanism</refpurpose> | |
34 | </refnamediv> | |
35 | ||
36 | <refsynopsisdiv> | |
37 | <para><filename>systemd-timedated.service</filename></para> | |
12b42c76 | 38 | <para><filename>/usr/lib/systemd/systemd-timedated</filename></para> |
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39 | </refsynopsisdiv> |
40 | ||
41 | <refsect1> | |
42 | <title>Description</title> | |
43 | ||
44 | <para><filename>systemd-timedated</filename> is a system service | |
45 | that may be used as a mechanism to change the system clock and | |
46 | timezone, as well as to enable/disable NTP time synchronization. | |
47 | <filename>systemd-timedated</filename> is automatically activated | |
48 | on request and terminates itself when it is unused.</para> | |
49 | ||
50 | <para>The tool | |
51 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
52 | is a command line client to this service.</para> | |
53 | ||
54 | <para>See the <ulink | |
28a0ad81 | 55 | url="https://www.freedesktop.org/wiki/Software/systemd/timedated"> |
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56 | developer documentation</ulink> for information about the APIs |
57 | <filename>systemd-timedated</filename> provides.</para> | |
58 | </refsect1> | |
59 | ||
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60 | <refsect1> |
61 | <title>Environment</title> | |
62 | ||
63 | <variablelist class='environment-variables'> | |
64 | <varlistentry> | |
65 | <term><varname>$SYSTEMD_TIMEDATED_NTP_SERVICES</varname></term> | |
66 | ||
67 | <listitem><para>Colon-separated list of unit names of NTP client services. | |
68 | If not set, then | |
69 | <citerefentry><refentrytitle>systemd-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
70 | is used. See the entries of NTP related commands of | |
71 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
72 | for details about this.</para> | |
73 | ||
74 | <para>Example: | |
75 | <programlisting>SYSTEMD_TIMEDATED_NTP_SERVICES=ntpd.service:chronyd.service:systemd-timesyncd.service</programlisting> | |
76 | </para></listitem> | |
77 | </varlistentry> | |
78 | </variablelist> | |
79 | </refsect1> | |
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80 | <refsect1> |
81 | <title>See Also</title> | |
82 | <para> | |
83 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
84 | <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
85 | <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
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86 | <citerefentry project='man-pages'><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
87 | <citerefentry><refentrytitle>systemd-timesyncd</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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88 | </para> |
89 | </refsect1> | |
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90 | |
91 | </refentry> |