Installation Guide

First, check if you already have Ruby installed by running "ruby -v" in your terminal.

Install by operating system via package manager:
Ubuntu or Debian
sudo apt-get install ruby-full
macOS brew install ruby
Arch Linux sudo pacman -S ruby
Gentoo sudo emerge dev-lang/ruby
CentOS or Red Hat
sudo yum install ruby
Now type in irb
Then type in puts "Hello World!"
You're now using Ruby!

To check your Ruby version run "ruby -v" in your terminal.

You can also install Ruby using rbenv for Linux/macOS/WSL