whois - client for the whois directory service
To Find IP Address Information $ whois 216.58.206.46
To Find Domain Information $ whois ilugc.in $ whois chennaipy.org
To find the Registry expiration date of a domain $ whois <domain name> | grep 'Registry Expiry Date:' $ whois ilugc.in | grep 'Registry Expiry Date:' $ whois linuxdelhi.org | grep 'Registry Expiry Date:' $ whois chennaipy.org | grep 'Registry Expiry Date:'
regards, T.Dhanasekar