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 is a system service that may be used as a mechanism
16       to change the system clock and timezone, as well as to enable/disable
17       network time synchronization.  systemd-timedated is automatically
18       activated on request and terminates itself when it is unused.
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20       The tool timedatectl(1) is a command line client to this service.
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22       See the developer documentation[1] for information about the APIs
23       systemd-timedated provides.
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LIST OF NETWORK TIME SYNCHRONIZATION SERVICES

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

52       systemd(1), timedatectl(1), localtime(5), hwclock(8), systemd-
53       timesyncd(8)
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NOTES

56        1. developer documentation
57           https://www.freedesktop.org/wiki/Software/systemd/timedated
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61systemd 245                                       SYSTEMD-TIMEDATED.SERVICE(8)
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