How to set Ruby on Rails Environment in Linux (Ubuntu)?

Update your package manager first:

$ sudo apt-get update

This must finish without error or the following step will fail.

Install Curl:

$ sudo apt-get install curl

You’ll use Curl for installing RVM.

$ \curl -L https://get.rvm.io | bash

vi ~/.bashrc

# This loads RVM into a shell session.
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"

restart terminal.

$ rvm get stable --autolibs=enable
$ rvm install ruby
$ rvm use 2.5.1 --default

Nodejs

$ sudo apt-get install nodejs

$ gem install bundler

$ gem install nokogiri

$ gem install rails

$ rails -v

$ rails new AppName

$ cd AppName

$ rails s