Provided by: util-linux_2.27.1-6ubuntu3.10_amd64 

NAME
hwclock - variables that affect the behaviour of the hwclock boot script
DESCRIPTION
The /etc/default/rcS file contains variable settings in POSIX format:
VAR=VAL
Only one assignment is allowed per line. Comments (starting with '#') are also allowed.
OPTIONS
The following variables can be set.
BADYEAR
This is used to specify that the hardware clock is incapable of storing years outside the range of
1994-1999. Set to yes if the hardware is broken or no if working correctly.
HWCLOCKACCESS
If the hardware clock is not accessible, set to no, in which case hwclock will not be run.
Otherwise, set to yes.
HWCLOCKPARS
Additional options for hwclock. Unset by default. For example, this may be use to specify the
machine hardware clock type for Alphas.
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.
AUTHOR
Roger Leigh <rleigh@debian.org>
SEE ALSO
hwclock(8), rcS(5).
Feb 2012 HWCLOCK(5)