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#!/bin/sh
set -e
NAMESERVERS="$(kdig -4 +short @ns.bfh.science ns.bfh.science)"
ZONE="$(cat /etc/hostname | awk -F. '{ print $(NF-1) "." $NF}')"
for NAMESERVER in ${NAMESERVERS}
do
echo -n " + Deleting TXT record (_acme-challenge.${DOMAIN})..."
NSUPDATE="$(mktemp nsupdate.XXXX)"
cat > "${NSUPDATE}" << EOF
server ${NAMESERVER}
zone ${ZONE}
ttl 300
update delete _acme-challenge.${DOMAIN} 300 TXT ${TOKEN_VALUE}
send
EOF
knsupdate "${NSUPDATE}"
rm -f "${NSUPDATE}"
echo " done."
done
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