Step-by-step – Nagios 4 Installation in Ubuntu 20.04 Guide

Installing

2. 2. Installing Nagios

   Then to Install Nagios 4 on Ubuntu
   Simply run:

   sudo apt install nagios4

   And to Search for Nagios Plugins:

   sudo apt search nagios | grep plugins

   The grep Command refine the output List showing only the Entries matching the Keyword.