Mastering the whois Command on Linux: A Comprehensive Guide

In this tutorial, How to Use whois Command on Linux

WHOIS (pronounced as the phrase "who is") is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block or an autonomous system. Quota from Wikipedia

Download and install Whois Linux command

For Ubuntu, Linux Mint, ElementaryOS and Debian OS:

sudo apt-get install whois

For CentOS and RHEL:

sudo dnf install whois

The output terminal as below

The syntax whois command

whois domain
whois public-ip-address
whois [options] public-ip-address

For example whois command

whois huuphan.com
whois 172.67.137.70

Getting help whois command

$ man whois

OR

$ whois --help

The output terminal as below

Conclusion

The whois command is a powerful tool for querying databases to obtain information about domain names, IP addresses, and more. By understanding how to use this command, you can efficiently gather essential data about internet resources, which is invaluable for network administration and security tasks. Installing and using whois on Linux is straightforward, and the command provides detailed insights, making it an essential utility for any system administrator. thank you for reading the huuphan.com page!