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#!/bin/bash
if [ -z "${1}" ]
then
NTPSERVER=132.163.135.130
else
NTPSERVER="${1}"
fi
#display how much your clock is off by
sntpclock $NTPSERVER > /tmp/sntpclock
if [ "${?}" != "0" ]
then
echo ">>> Could not contact NTP server: $NTPSERVER" >&2
exit 1
fi
echo ">>> Current clock sync:"
cat /tmp/sntpclock | clockview
echo
echo -n ">>> Now setting clock..."
cat /tmp/sntpclock | clockadd
echo " done."
#wite data to the hardware clock so it survives a reboot
echo -n ">>> Writing time to hardware clock..."
hwclock --systohc
echo " done."
echo
echo ">>> New clock sync:"
sntpclock $NTPSERVER | clockview
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