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Installing Nmap on a Linux distribution is a different process. Most of the Linux-based operating systems have a single-step installation, using the package management utilities such as yum and apt. 

Ensure that the machine is connected to the internet and execute the following commands:

• On CentOS, use the following command:

yum install Nmap

• On Debian or Ubuntu, use the following command:

apt-get install Nmap