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How to Install Ruby on Debian 10 Buster

Written by Admin, Updated On August 11, 2019
debian, ruby
How to Install Ruby on Debian 10 Buster

Ruby is one of the most popular language nowadays. Ruby is used for web applications and also for games etc. In this tutorial, described steps to install Ruby on Debian 10. It’s used with Ruby on Rails framework.

Prerequisites#

Before you start installation, make sure that you should logged in with non-root user account with sudo privileges.

Installing Ruby from Debian Repositories#

Ruby package is available in the default Debian repositories. So you can install it using apt package manager. Follow the below steps to install Ruby from the default Debian repositories:

At first, you need to update the packages index list:

sudo apt update

Next install Ruby using below command:

sudo apt install ruby-full

To verify the installation by issue the below command and it will print the version of installed Ruby.

ruby --version

It should look like as below:

Output
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]

Install Ruby using Rbenv#

Rbenv is a Ruby version management tool. Using this tool you can easily switch the version of Ruby on same system if installed multiple versions. By default Rbenv doesn’t handle installing Ruby versions so we also need to install ruby-build which is a tool that will help you to install specific version of Ruby which you need. Follow the instruction below to install Ruby using Rbenv:

First of all, you should update the package index list by typing:

sudo apt update

After that, we will install dependencies for installation of rbenv and ruby-build:

sudo apt install git curl libssl-dev libreadline-dev zlib1g-dev autoconf bison build-essential libyaml-dev libreadline-dev libncurses5-dev libffi-dev libgdbm-dev

After that run the following curl command to install rbenv and ruby-build:

curl -sL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-installer | bash -

Above command will clone both rbenv and ruby-build repositories from GitHub to ~/.rbenv directory.

Add $HOME/.rbenv/bin to the system PATH.

If you are using Bash, run:

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

If you are using Zsh run:

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

Select the latest and stable version of Ruby and you can set default version as per your need.

rbenv install 2.6.3
rbenv global 2.6.3

You can confirm installation by issuing below command:

ruby -v

It should show output as below:

Output
ruby 2.3.3p222 (2016-11-21) [x86_64-linux-gnu]

Ruby Program Example#

We are going to create a simple ruby program. So create a demo.rb file using your favorite editor:

sudo nano demo.rb

Paste below lines in to that file:

puts "Ruby Simple Demo"

Save file and exit from editor using Ctrl+x.

To run demo.rb file issue below command:

ruby demo.rb

It will print simple output as below:

Output
Ruby Simple Demo

Conclusion#

You have successfully learned multiple ways to install Ruby on Debian 10 Buster. If you have any problem or suggestion please leave a comment below.

If our content helps you, please consider buying us a coffee

Thank you for your support.

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