if [ -n "${nameserver}" ]
then
+ if [ -e "${DNSFILE}" ]
+ then
+ grep -v ^nameserver "${DNSFILE}" > "${DNSFILE}.tmp"
+ mv "${DNSFILE}.tmp" "${DNSFILE}"
+ fi
-cat >> "${DNSFILE}" << EOF
-nameserver ${nameserver}
-EOF
-
+ echo "nameserver ${nameserver}" >> "${DNSFILE}"
fi
done
else