To install the whois client on a Red Hat or CentOS Linux system, you can use the yum package manager and the install subcommand.
For example, to install the whois client, you can use the following command:
sudo yum install whois
This will install the whois client and all the necessary dependencies.
Alternatively, you can use the dnf package manager to install the whois client. For example:
sudo dnf install whois
Once the whois client is installed, you can use it to query whois servers to obtain information about domain names, IP addresses, and other network resources.
It's always a good idea to carefully review the documentation and use the appropriate commands to install the whois client on your system. This will help ensure that you have the necessary tools to obtain information about network resources.