Bulk modifying cPanel DNS zones

Make a backup of the zones

cp -R /var/named /var/named.bak

Modifying zones

cd /var/named
sed -i /ns1.xxxx/ns1.yyyy/g *.db

Modification of serial

find /var/named/*.db -exec perl -pi -e 'if (/^\t+(\d{10})\s+;serial/i) { my $i = $1+1; s/$1/$i/;}' {} \;

Zone synchronization

/scripts/dnscluster syncall