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:'