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#!/bin/sh
max_attempts=4
try_count=0
# This script takes a list of ntp servers and passes them to ntpd to set the
# system time. If a /etc/ntpd.conf file exists, the servers there are used,
# if not, some default values are passed
set_time() {
ntpd -n -p $1;
return $?
}
check_time() {
for arg ; do
echo $arg
if set_time $arg ; then
return 0
fi
done
# In case we are doing this before the network is up, try again
let try_count=try_count+1
if [ $try_count -lt $max_attempts ] ; then
sleep 2
check_time $@
else
return 1
fi
}
if [ -f /etc/ntpd.conf ]; then
server_list=`cat /etc/ntpd.conf | sed ':a;N;$!ba;s/\n/ /g;s/server//g'`
check_time $server_list
else
# Use a default list if there's no config
check_time 0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org
fi
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