Basic bash script for mass extraction of WHOIS data from a bunch of Domains or IPs. It also supports automatic Domain to IP resolution for querying also the WHOIS IP and a Summary report with key findings into an external file
USAGE: ./whois_extractor.sh my_ips.txt resolve
OPTIONAL: Use 'resolve' only if you want to also query WHOIS data for the related IP of a given Domain in your input file