#!/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 "$@"