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How do I install whois on Ubuntu / Debian Linux

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What is whois tool in linux?

The whois command on Ubuntu is a command line utility that allows you to look up information about domain names and IP addresses. When you run whois followed by a domain name or IP address, it will return information about the owner of that domain or the location of the IP address.

For example, to look up information about the domain example.com, you would run:

whois example.com

This would return information such as the registrar of the domain, the name servers associated with the domain, and the date the domain was registered.

To look up information about an IP address, you can run whois followed by the IP address. For example:

whois 8.8.8.8

This would return information about the owner of the IP address, as well as the location and other details about the address.

You can also use the whois command to search for information about specific fields. For example, to search for the name of the organization associated with an IP address, you can use the -h option followed by the name of the field you want to search for:

whois -h whois.arin.net "n + 8.8.8.8"

This would return the name of the organization associated with the IP address 8.8.8.8.

How to install whois on Ubuntu/Debian Linux

The whois command is usually pre-installed on most Ubuntu systems. However, if it is not installed on your system, you can install it by running the following command:

sudo apt-get update
sudo apt-get install whois

This will install the whois command and any dependencies it requires. Once the installation is complete, you can use the whois command as described above.

Before you can use the apt-get command, you need to make sure that your system is set up to use the package manager. This includes installing the apt package, which is the package manager for Ubuntu and other Debian-based systems.

To install apt, you will need to have root access to your system, or have a user account with sudo privileges. You will also need to have a connection to the internet so that the package manager can download the necessary packages from the repositories.

Conclusion

In this tutorial, you learned how to install Whois on Ubuntu/Debian Linux. You can now use Whois to look up domain name or IP address registration information.

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