1SYSTEMD-TIMEDATED.SERVICE(8)systemd-timedated.servicSeYSTEMD-TIMEDATED.SERVICE(8)
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NAME

6       systemd-timedated.service, systemd-timedated - Time and date bus
7       mechanism
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SYNOPSIS

10       systemd-timedated.service
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12       /usr/lib/systemd/systemd-timedated
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DESCRIPTION

15       systemd-timedated.service is a system service that may be used as a
16       mechanism to change the system clock and timezone, as well as to
17       enable/disable network time synchronization.  systemd-timedated is
18       automatically activated on request and terminates itself when it is
19       unused.
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21       The tool timedatectl(1) is a command line client to this service.
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23       systemd-timedated currently offers access to the following four
24       settings:
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26       •   The system time
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28       •   The system timezone
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30       •   A boolean controlling whether the system RTC is in local or UTC
31           timezone
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33       •   Whether the time synchronization service is enabled/started or
34           disabled/stopped, see next section.
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36       See org.freedesktop.timedate1(5) and org.freedesktop.LogControl1(5) for
37       information about the D-Bus API.
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LIST OF NETWORK TIME SYNCHRONIZATION SERVICES

40       systemd-timesyncd will look for files with a ".list" extension in
41       ntp-units.d/ directories. Each file is parsed as a list of unit names,
42       one per line. Empty lines and lines with comments ("#") are ignored.
43       Files are read from /usr/lib/systemd/ntp-units.d/ and the corresponding
44       directories under /etc/, /run/, /usr/local/lib/. Files in /etc/
45       override files with the same name in /run/, /usr/local/lib/, and
46       /usr/lib/. Files in /run/ override files with the same name under
47       /usr/. Packages should install their configuration files in /usr/lib/
48       (distribution packages) or /usr/local/lib/ (local installs).
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50       Example 1. ntp-units.d/ entry for systemd-timesyncd
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52           # /usr/lib/systemd/ntp-units.d/80-systemd-timesync.list
53           systemd-timesyncd.service
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55       If the environment variable $SYSTEMD_TIMEDATED_NTP_SERVICES is set,
56       systemd-timesyncd will parse the contents of that variable as a
57       colon-separated list of unit names. When set, this variable overrides
58       the file-based list described above.
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60       Example 2. An override that specifies that chronyd should be used if
61       available
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63           SYSTEMD_TIMEDATED_NTP_SERVICES=chronyd.service:systemd-timesyncd.service
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SEE ALSO

66       systemd(1), timedatectl(1), localtime(5), hwclock(8), systemd-
67       timesyncd(8)
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71systemd 249                                       SYSTEMD-TIMEDATED.SERVICE(8)
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