Step-by-step – RVM Ubuntu 18.04 Installation

Installing

2. 2. Enabling RVM PPA

   Add RVM PPA for Ubuntu GNU/Linux

   Enabling RVM Repo for Ubuntu

   RVM PPA for Ubuntu

3. 3. Installing RVM

   Then to Install RVM in Ubuntu
   Simply run:

   sudo apt install rvm

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo