install-ruby.adoc

Install Ruby

Table of Contents

• Overview
• Install via RVM
  • Install GPG keys
  • Basic Install
  • Install via rbenv
    • Update and install dependencies
• Install rbenv
  • Install Ruby
• ruby-install
  • Features
• Next Topic
• Table of Content

Overview

You can use several tools to install Ruby. This page describes how to install Ruby in Linux, macOS or Windows.

Install via RVM

RVM supports most UNIX like systems and Windows (with Cygwin or Bash on Ubuntu on Windows). The basic requirements are bash, curl, gpg2 and overall GNU version of tools - but RVM tries to autodetect it and install anything that is needed.

Install GPG keys

As a first step install mpapis public key used to verify installation package to ensure security.

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

Basic Install

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

For more information, proceed to RVM website.

Install via rbenv

Groom your app’s Ruby environment.

Use rbenv to pick a Ruby version for your application and guarantee that your development environment matches production. Put rbenv to work with Bundler for painless Ruby upgrades and bulletproof deployments.

Warning

rbenv is incompatible with RVM. Please make sure to fully uninstall RVM and remove any references to it from your shell initialization files before installing it.

Note	Following instrcutions shows how to install Ruby via rbenv in Ubuntu 16.04. Check your own preferences here.

Update and install dependencies

sudo apt-get update

Install the dependencies required for rbenv and Ruby with apt-get:

sudo apt-get install autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev

Install rbenv

• Clone the rbenv repository from git.

git clone https://github.com/rbenv/rbenv.git ~/.rbenv

• Add ~/.rbenv/bin to your $PATH and other required steps

echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
source ~/.bashrc

Install Ruby

• List the available versions

rbenv install -l

• Install specific version

rbenv install 2.5.0

ruby-install

Installs Ruby, JRuby, Rubinius, TruffleRuby or mruby.

Features

Following are few features ruby-install come with

• Supports installing arbitrary versions.

• Supports downloading the latest versions and checksums from ruby-versions.

• Supports installing into arbitrary directories.

• Supports downloading from arbitrary URLs.

• Supports downloading from mirrors.

• Supports downloading/applying patches.

• Supports installing build dependencies via the package manager:

• apt

• dnf

• yum

• brew

• …​

For more information, proceed to ruby-install README.

Next Topic

Proceed to irb

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