set -x
-. `dirname $0`/vars
+. $(dirname $0)/vars
-namedtmp=`mktemp named.conf.ad.XXXXXXXXX`
-cp `dirname $0`/named.conf.ad.template $namedtmp
+namedtmp=$(mktemp named.conf.ad.XXXXXXXXX)
+cp $(dirname $0)/named.conf.ad.template $namedtmp
sed -i "s/DNSDOMAIN/$DNSDOMAIN/g" $namedtmp
sed -i "s/SERVERIP/$server_ip/g" $namedtmp
chmod a+r $namedtmp
mv -f $namedtmp $PREFIX/private/named.conf
sudo rndc reconfig
-`dirname $0`/unvampire_ad.sh
+$(dirname $0)/unvampire_ad.sh
-cat <<EOF > nsupdate.txt
+cat <<EOF >nsupdate.txt
update delete $DNSDOMAIN A $machine_ip
show
send