How To Run Ruby Code

Ruby is a dynamic, open-source programming language that emphasizes simplicity and productivity. Its syntax is easy to read and write, making it popular among beginners and experienced developers alike. In this blog post, we’ll introduce you to running Ruby code in a few simple ways.

1. Running Ruby code from the command line

The most straightforward way to run Ruby code is directly from your terminal or command prompt. First, make sure you have Ruby installed on your system. You can check by typing ruby -v in your terminal. If you don’t have Ruby installed, you can download it from the official Ruby website.

Once Ruby is installed, you can run Ruby code in one of two ways:

  • Inline: Type ruby -e “your_code_here” to run a single line of Ruby code. For example, to print “Hello, World!” in Ruby, type ruby -e “puts ‘Hello, World!'”.
  • Script: Save your Ruby code in a file with a .rb extension, such as hello_world.rb. Then, in your terminal, navigate to the directory containing your script and type ruby hello_world.rb to run it.

2. Running Ruby code using an Integrated Development Environment (IDE) or Text Editor

Another way to run Ruby code is by using an Integrated Development Environment (IDE) or a text editor with Ruby support. Some popular choices are:

After installing your chosen IDE or text editor, open your Ruby file (or create a new one), and use the built-in features to run the code. Most IDEs and text editors have a dedicated “Run” button, or you can use a keyboard shortcut (check the documentation for your specific tool).

3. Running Ruby code in an online REPL

If you don’t want to install Ruby or any additional software, you can run your Ruby code in an online REPL (Read-Eval-Print Loop) environment. Some popular choices are:

To run your Ruby code in an online REPL, simply navigate to one of the above websites, paste your code into the editor, and click the “Run” button (or similar). The output will be displayed in the designated output area.


Running Ruby code is as easy as using the command line, an IDE or text editor, or an online REPL. Whichever method you choose, you’ll be on your way to developing Ruby applications in no time. Happy coding!