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#!/bin/sh
### BEGIN INIT INFO
# Provides: hwclock
# Required-Start:
# Required-Stop: mountdevsubfs
# Should-Stop: umountfs
# Default-Start: S
# Default-Stop: 0 6
# Short-Description: Save system clock to hardware on shutdown.
### END INIT INFO
# Note: this init script and related code is only useful if you
# run a sysvinit system, without NTP synchronization.
if [ -e /run/systemd/system ] ; then
exit 0
fi
unset TZ
hwclocksh()
{
HCTOSYS_DEVICE=rtc0
[ ! -x /sbin/hwclock ] && return 0
[ ! -r /etc/default/rcS ] || . /etc/default/rcS
[ ! -r /etc/default/hwclock ] || . /etc/default/hwclock
. /lib/lsb/init-functions
verbose_log_action_msg() { [ "$VERBOSE" = no ] || log_action_msg "$@"; }
case "$1" in
start)
# start is handled by /usr/lib/udev/rules.d/85-hwclock.rules.
return 0
;;
stop|restart|reload|force-reload)
# Updates the Hardware Clock with the System Clock time.
# This will *override* any changes made to the Hardware Clock,
# for example by the Linux kernel when NTP is in use.
log_action_msg "Saving the system clock to /dev/$HCTOSYS_DEVICE"
if /sbin/hwclock --rtc=/dev/$HCTOSYS_DEVICE --systohc; then
verbose_log_action_msg "Hardware Clock updated to `date`"
fi
;;
show)
/sbin/hwclock --rtc=/dev/$HCTOSYS_DEVICE --show
;;
*)
log_success_msg "Usage: hwclock.sh {stop|reload|force-reload|show}"
log_success_msg " stop and reload set hardware (RTC) clock from kernel (system) clock"
return 1
;;
esac
}
hwclocksh "$@"
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