vsntp.redhat

一个开源的NTP客户端程序

#!/bin/sh
# start and stop the SNTP client for Virtual PC

# Red Hat styled comments for chkconfig
# chkconfig: 2345 58 74
# description: SNTP client for Virtual PC
# processname: vsntp
# config: /etc/sysconfig/vsntp

# LSB-convension comments
# See: http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/initscrcomconv.html
### BEGIN INIT INFO
# Provides:          vsntp
# Required-Start:    $network $time
# Required-Stop:     
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: start and stop the SNTP client for Virtual PC
# Description:       vsntp is a SNTP client for Virtual PC that synchronize
#                    time periodically for systems without hardward RTC.
### END INIT INFO

export PATH=/sbin:/bin:/usr/sbin:/usr/bin

# initialize the environment
THISFILE="${0##*/}"
VERSION="1.0.0"
AUTHORNAME=imacat
AUTHORMAIL=[e-mail]
lock=/var/lock/subsys/vsntp

# Source function library.
. /etc/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0

if [ -f /etc/sysconfig/vsntp ];then
  . /etc/sysconfig/vsntp
fi
case "$SCHEDULER" in
alarm|a|-a|--alarm)
  SCHEDULER=-a ;;
*)
  SCHEDULER=-s ;;
esac

# default values -- do not change anything here
_DEFSYNC_INTERVAL=900
_DEFSCHEDULER=-s

RETVAL="0"
OPTIONS=""
test -n "$SCHEDULER" -a "$SCHEDULER" != "$_DEFSCHEDULER" && OPTIONS="$OPTIONS $SCHEDULER"
test -n "$SYNC_INTERVAL" -a "$SYNC_INTERVAL" != "$_DEFSYNC_INTERVAL" && OPTIONS="$OPTIONS -i $SYNC_INTERVAL"
OPTIONS="$OPTIONS $SERVER"

# See how we were called.
start() {
  echo -n "Starting SNTP client for Virtual PC: "
  daemon vsntp $OPTIONS
  RETVAL="$?"
  echo
  [ "$RETVAL" -eq "0" ] && touch $lock
  return "$RETVAL"
}
stop() {
  echo -n "Stopping SNTP client for Virtual PC: "
  killproc vsntp
  RETVAL="$?"
  echo
  [ "$RETVAL" -eq "0" ] && rm -f $lock
  return "$RETVAL"
}
rhstatus() {
  status vsntp
}
restart() {
  stop
  start
}


# parse the arguments
while [ "$#" != "0" ]; do
  case "$1" in
  start|stop|restart|status)
    action="$1"
    ;;
  -h|--help)
    cat << EOF
Start and/or stop the SNTP client for Virtual PC
Usage: $THISFILE {start|stop|restart|status}

  start         Start the daemon.
  stop          Stop the daemon.
  restart       Stop and restart the daemon.
  status        Display the daemon status
  -h,--help     Display this help.
  -v,--version  Display the version infomation.

Report bugs to $AUTHORNAME <$AUTHORMAIL>
EOF
    exit 0
    ;;
  -v|--version)
    cat << EOF
$THISFILE v$VERSION by $AUTHORNAME <$AUTHORMAIL>
EOF
    exit 0
    ;;
  *)
    echo "$THISFILE: unrecognized argument: $1"
    echo "Try \`$THISFILE --help' for more infomation"
    exit 1
    ;;
  esac
  shift
done

# check the arguments
if [ -z "$action" ]; then
  cat << EOF
Usage: $THISFILE {start|stop|restart|status}
EOF
  exit 0
fi

# process now
case "$action" in
start)
  start
  ;;
stop)
  stop
  ;;
restart)
  restart
  ;;
status)
  rhstatus
  ;;
esac

exit $?