lfs-book-zh_CN/bootscripts/lfs/init.d/setclock

#!/bin/sh
########################################################################
# Begin setclock
#
# Description : Setting Linux Clock
#
# Authors     : Gerard Beekmans - gerard@linuxfromscratch.org
#               DJ Lucas - dj@linuxfromscratch.org
# Update      : Bruce Dubbs - bdubbs@linuxfromscratch.org
#
# Version     : LFS 7.0
#
########################################################################

### BEGIN INIT INFO
# Provides:            
# Required-Start:
# Should-Start:        modules
# Required-Stop:
# Should-Stop:         $syslog
# Default-Start:       S
# Default-Stop:
# Short-Description:   Stores and restores time from the hardware clock
# Description:         On boot, system time is obtained from hwclock.  The
#                      hardware clock can also be set on shutdown.
# X-LFS-Provided-By:   LFS BLFS
### END INIT INFO

. /lib/lsb/init-functions

[ -r /etc/sysconfig/clock ] && . /etc/sysconfig/clock


case "${UTC}" in
   yes|true|1)
      CLOCKPARAMS="${CLOCKPARAMS} --utc"
      ;;

   no|false|0)
      CLOCKPARAMS="${CLOCKPARAMS} --localtime"
      ;;

esac

case ${1} in
   start)
      hwclock --hctosys ${CLOCKPARAMS} >/dev/null
      ;;

   stop)
      log_info_msg "Setting hardware clock..."
      hwclock --systohc ${CLOCKPARAMS} >/dev/null
      evaluate_retval
      ;;

   *)
      echo "Usage: ${0} {start|stop}"
      exit 1
      ;;

esac

exit 0