How to Install Ruby on Linux (Ubuntu/Debian) - Step-by-Step Guide

Checking for Existing Ruby Installation

• 🔍 Check if Ruby is installed on your Linux system by opening the terminal and typing ruby -v.
• ⚠️ If the command returns 'ruby not found', Ruby is not currently installed.

Obtaining Installation Instructions

• 🌐 Navigate to the official Ruby website to find the most accurate installation instructions for your specific Linux distribution.
• 📌 Select the correct instructions based on your distribution (e.g., Debian/Ubuntu).

Installing Ruby on Ubuntu/Debian

• 💻 Use the command sudo apt install ruby-full in the terminal for Ubuntu/Debian systems.
• 🔑 You will be prompted to enter your password and confirm the installation by typing 'Y' and pressing Enter.
• ⏳ Wait for the installation process to complete.

Verifying the Ruby Installation

• ✅ After installation, re-run ruby -v to confirm the Ruby version (e.g., Ruby 3.2.3).

Testing Ruby Installation

• 📝 Create a new file named hello.rb using a text editor.
• ✍️ Inside the file, add the line puts "hello" to print text.
• 🚀 Execute the script by typing ruby hello.rb in the terminal to see the output 'hello'.