Building hosts files for bind9 from a list of domains in a txt file

bind_hosts_query.sh

#!/bin/bash
# 2013/01/21
# Building hosts files for bind9 from a list of domains in a txt file

DNS=some.dnsserver.net

for d in `cat domains`; do
    echo "\$ttl 38400" > $d.hosts
    dig +nocmd @$DNS $d any +multiline +noall +answer >> $d.hosts
    for cname in 'www' 'ftp' 'mail' 'webmail'; do
        dig +nocmd @$DNS $cname.$d CNAME +multiline +noall +answer >> $d.hosts
    done
    # now include input in /etc/bind/named.conf.local
    echo -e "zone \"$d\" {" >> /etc/bind/named.conf.local
    echo -e "\ttype master;" >> /etc/bind/named.conf.local
    echo -e "\tfile \"/var/lib/bind/$d.hosts\";" >> /etc/bind/named.conf.local
    echo -e "\t};" >> /etc/bind/named.conf.local
done