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#!/bin/sh
# Start/stop/restart ntpd.
# Start ntpd:
ntpd_start() {
CMDLINE="/usr/sbin/ntpd -g"
echo -n "Starting NTP daemon: $CMDLINE"
$CMDLINE -p /var/run/ntpd.pid
echo
# The kernel is now mocking around with the the hardware clock if
# ntpd is running, so if the hardware clock (wall clock) is set to
# 'localtime' execute hwclock --localtime --systohc to disable the
# 11 minute mode kernel function:
if [ -x /sbin/hwclock ]; then
# Check for a broken motherboard RTC clock (where ioports for rtc are
# unknown) to prevent hwclock causing a hang:
if ! grep -q -w rtc /proc/ioports ; then
CLOCK_OPT="--directisa"
fi
if ! grep -q "^UTC" /etc/hardwareclock 2> /dev/null ; then
echo "Saving system time to the hardware clock (localtime)."
/sbin/hwclock $CLOCK_OPT --localtime --systohc
fi
fi
}
# Stop ntpd:
ntpd_stop() {
echo -n "Stopping NTP daemon..."
if [ -r /var/run/ntpd.pid ]; then
kill -HUP $(cat /var/run/ntpd.pid)
rm -f /var/run/ntpd.pid
else
killall -HUP -q ntpd
fi
echo
}
# Restart ntpd:
ntpd_restart() {
ntpd_stop
sleep 1
ntpd_start
}
# Check if ntpd is running
ntpd_status() {
if [ -e /var/run/ntpd.pid ]; then
echo "ntpd is running."
else
echo "ntpd is stopped."
exit 1
fi
}
case "$1" in
'start')
ntpd_start
;;
'stop')
ntpd_stop
;;
'restart')
ntpd_restart
;;
'status')
ntpd_status
;;
*)
echo "usage $0 start|stop|restart|status"
esac
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