Step-by-step ROS 1 Melodic Ubuntu 18.04 Installation Easy Guide

Installing

2. 2. Enabling ROS 1 Repository

   Add ROS 1 Repository for Ubuntu GNU/Linux

   Install ROS 1 Repo for Ubuntu

   ROS 1 Repository for Ubuntu

3. 3. Installing ROS

   Then to Install ROS 1 on Ubuntu
   So Now to Install the Recommended Complete Bundle use:

   sudo apt install ros-melodic-desktop-full

   Either for the ROS Desktop:

   sudo apt install ros-melodic-desktop

   Or again for the Bare Bone Base without GUI:

   sudo apt install ros-melodic-ros-base

   Furthermore, to Search for Optional ROS Packages:

   sudo apt search ros-melodic