Dynamic DNS for NSD
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#!/usr/bin/env bash
. /etc/dyndns.conf
REQ_IP=$(/usr/bin/grep ${PASS} ${LOG} | /usr/bin/tail -1 | /usr/bin/awk '{print $2}')
if [ -f $LAST_IP_FILE ]; then
LAST_IP=$(/bin/cat $LAST_IP_FILE)
fi
if [[ $LAST_IP != $REQ_IP ]]; then
/bin/cat $ZONEFILE | /usr/bin/sed "4s/.*/${TIMESTAMP}/" | /usr/bin/sed "s/^${SUBDOMAIN}.*/${SUBDOMAIN} IN A ${REQ_IP}/" > $ZONEFILE
/etc/rc.d/nsd reload
/bin/echo $REQ_IP > $LAST_IP_FILE
/bin/echo "update"
fi