HWCLOCK(5) Debian Administrator's Manual HWCLOCK(5)
NAME
hwclock - settings that affect the behaviour of the hwclock init script
DESCRIPTION
The /etc/default/hwclock file contains settings in POSIX format:
VAR=VAL
Only one assignment is allowed per line. Comments (starting with '#')
are also allowed.
SETTINGS
The following settings can be set.
HCTOSYS_DEVICE
The hardware clock device you want to use. Defaults to rtc0.
It should probably match the CONFIG_RTC_HCTOSYS_DEVICE kernel
config option.
If you change this, you also need to install a custom udev rule,
mirroring /usr/lib/udev/rules.d/85-hwclock.rules. Otherwise, the
hardware clock device will be ignored during boot.
On almost all systems, this should not be changed.
NOTES
On systems using systemd as init, the hwclock init script is ignored.
SEE ALSO
hwclock(8), systemd-timesyncd.service(8)
Dec 2020 HWCLOCK(5)
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