phpman > man > systemd-timedated(8)

SYSTEMD-TIMEDATED.SERVICE(8)          systemd-timedated.service         SYSTEMD-TIMEDATED.SERVICE(8)



NAME
       systemd-timedated.service, systemd-timedated - Time and date bus mechanism

SYNOPSIS
       systemd-timedated.service

       /lib/systemd/systemd-timedated

DESCRIPTION
       systemd-timedated.service 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.
       systemd-timedated is automatically activated on request and terminates itself when it is
       unused.

       The tool timedatectl(1) is a command line client to this service.

       systemd-timedated currently offers access to the following four settings:

       •   The system time

       •   The system timezone

       •   A boolean controlling whether the system RTC is in local or UTC timezone

       •   Whether the time synchronization service is enabled/started or disabled/stopped, see next
           section.

       See org.freedesktop.timedate1(5) and org.freedesktop.LogControl1(5) for information about the
       D-Bus API.

LIST OF NETWORK TIME SYNCHRONIZATION SERVICES
       systemd-timesyncd will look for files with a ".list" extension in ntp-units.d/ directories.
       Each file is parsed as a list of unit names, one per line. Empty lines and lines with
       comments ("#") are ignored. Files are read from /usr/lib/systemd/ntp-units.d/ and the
       corresponding directories under /etc/, /run/, /usr/local/lib/. Files in /etc/ override files
       with the same name in /run/, /usr/local/lib/, and /lib/. Files in /run/ override files with
       the same name under /usr/. Packages should install their configuration files in /usr/lib/
       (distribution packages) or /usr/local/lib/ (local installs).

       Example 1. ntp-units.d/ entry for systemd-timesyncd

           # /usr/lib/systemd/ntp-units.d/80-systemd-timesync.list
           systemd-timesyncd.service

       If the environment variable $SYSTEMD_TIMEDATED_NTP_SERVICES is set, systemd-timesyncd 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.

       Example 2. An override that specifies that chronyd should be used if available

           SYSTEMD_TIMEDATED_NTP_SERVICES=chronyd.service:systemd-timesyncd.service

SEE ALSO
       systemd(1), timedatectl(1), localtime(5), hwclock(8), systemd-timesyncd(8)



systemd 249                                                             SYSTEMD-TIMEDATED.SERVICE(8)