#!/bin/sh

# (c)  http://scripts.akakul.co.uk/


old_pri_ns="ns1.cameldns.com"
old_sec_ns="ns2.cameldns.com"
new_pri_ns="new_ns1.cameldns.com"
new_sec_ns="new_ns2.cameldns.com"
new_sec_ns_ip="255.255.255.255"
old_A_rec_ip="123.123.123.123"
new_A_rec_ip="111.222.111.222"

new_serial_date=$(date +%Y%m%d01)

echo "/^;/d;
s~$old_pri_ns.~$new_pri_ns.~g;
s~$old_sec_ns.~$new_sec_ns.~g;
s~$old_A_rec_ip~$new_A_rec_ip~g;
/(/{
n
i\\
		$new_serial_date
d
}" > new_serial.sed
rm -rf my_temp_conf
for dom in $(ls -A | grep "^pri.\|^sec.");do
	echo $dom | grep --silent --no-messages "^pri."
	if [ $? -eq 0 ];	then
		sed -f new_serial.sed $dom > $dom.$$
		mv $dom.$$ $dom
		echo -e "zone \"$dom\" {;\ntype master;\nfile \"/var/named/$dom\";\n};\n\n" >> my_temp_conf
	else
		echo -e "zone \"$dom\" {\ntype slave;\nfile \"/var/named/$dom\";\nmasters { $new_sec_ns_ip; };\n};\n\n" >> my_temp_conf
		rm $dom	# yes we ARE deleting the secondary zone file here
	fi
done
rm -rf new_serial.sed


echo "Thats it, we are done"
exit