Grep ideas from Brain
./openssldomains.sh subdomains.txt
Output: url-sams.walmartmobile.cn view-sams.walmartmobile.cn www-cdn-sams.walmartmobile.cn *.art.com *.walmartchile.cl walmartchile.cl
./whoislookup.sh maindomain.txt
output: Domain Name: WALMARTIMAGES.COM Registrant Organization: Organization: Wal-Mart Stores, Inc.