In the tutorial I’m showing how to install whois client in Ubuntu. Whois performs the registration record for the domain name or IP.
To install whois client in Ubuntu run below command in terminal.
apt-get install whois
Now your system is ready for whois command.
For example : whois hosthowto.com
Whois IP : whois 216.239.34.10
Know about whois: http://en.wikipedia.org/wiki/Whois