Install Ruby on Rails with RVM on Ubuntu

What Will I Learn?

• You will learn about the installation of ruby
• You will learn how to use rvm
• You will learn how to create rvm gemset
• You will learn how to install rails with any version

Requirements

• Ubuntu
• internet connection

Difficulty

• Intermediate

Tutorial Contents

The first step is to install some dependencies for Ruby and Rails.

To make sure we have everything necessary for Webpacker support in Rails, we're first going to start by adding the Node.js and Yarn repositories to our system before installing them. Please run the following commands from 1-5 one by one

 curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -

echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt-get update

sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev nodejs yarn

Next step is to install Ruby using rvm for that please run the folowings command one by one. we are going to install ruby version 2.4.0 but you can install any stable version version for that you have to repalce the vesion number only.

sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

curl -sSL https://get.rvm.io | bash -s stable

source ~/.rvm/scripts/rvm

rvm install 2.4.0

rvm use 2.4.0 --default

ruby -v

The last step is to install Bundler:

gem install bundler

we're going to need to install a Javascript runtime like NodeJS. This lets you use Coffeescript and the Asset Pipeline in Rails which combines and minifies your javascript to provide a faster production environment. To install NodeJS, we're going to add it using the official repository:

curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -

sudo apt-get install -y nodejs

Since we are using RVM so we can install many versions of rails with ruby by using the gemsets.
First of all we have to create a gemset for example:

rvm gemset create 4.2.4

- 4.2.4 is the gemset name. We are using this name because it is easy to remember which rails version is install by checking the rails version.

We can check gemset lists by

rvm gemset list

Now, select the ruby and gemset so that we can install rails in this gemset.

rvm use [email protected]

Next is to install the compatible vesion of rails with ruby. For now we are going to install rails 4.2.4.

gem install rails -v 4.2.4

We can check the rails version by

rails -v

---

Posted on Utopian.io - Rewarding Open Source Contributors

---