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man timedatectl
set-ntp [BOOL]
Takes a boolean argument. Controls whether network time synchronization is active and enabled (if available). If the argument is
true, this enables and starts the first existing network synchronization service. If the argument is false, then this disables
and stops the known network synchronization services. The way that the list of services is built is described in systemd-
timedated.service(8).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).
Fedoran pl alapbol active chrony-val.