dns_query_udns

code almost from em-udns

install (for example on debian)

sudo apt-get update

sudo apt-get install build-essential

sudo apt-get install ruby ruby-dev ruby-eventmachine

sudo apt-get install udns-utils libudns-dev libudns0

sudo gem sources --remove https://rubygems.org/

sudo gem sources -a https://ruby.taobao.org/

sudo gem install em-udns

usage

./dns_query_dom_multi_recur.rb [domain] [recur_dns_file]

./dns_query_dom_multi_recur.rb www.google.com recur.txt > recur-google.com.txt

./dns_query_recur_multi_dom.rb [recur] [domain_file]

./dns_query_recur_multi_dom.rb 8.8.8.8 dom.txt > dom-8.8.8.8.txt

it's ok when recur.txt/dom.txt line count <= 1000，just dig A record