systemd-timedated(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | LIST OF NETWORK TIME SYNCHRONIZATION SERVICES | SEE ALSO | COLOPHON

SYSTEMD-TIMEDATED.SERVICE(8)stemd-timedated.serviceTEMD-TIMEDATED.SERVICE(8)

NAME         top

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

SYNOPSIS         top

       systemd-timedated.service

       /usr/lib/systemd/systemd-timedated

DESCRIPTION         top

       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         top

       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 /usr/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         top

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

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2020-07-14.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-07-14.)  If you discover any rendering problems in
       this HTML version of the page, or you believe there is a better or
       more up-to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not part
       of the original manual page), send a mail to man-pages@man7.org

systemd 246                                     SYSTEMD-TIMEDATED.SERVICE(8)

Pages that refer to this page: 30-systemd-environment-d-generator(7)systemd.index(7)