Installing Ruby

Installing Ruby

Ruby needs to be installed before you can run any Ruby script, and it's available on Linux, macOS, and Windows through various installers. Most developers use a version manager like rbenv or rvm to switch between Ruby versions per project, rather than a single system-wide install. Package managers like apt, brew, and choco also provide direct installs.

Note: Run ruby -v after installing to confirm the interpreter is on your PATH.

Example: Installing Ruby

# Linux (Ubuntu/Debian)
sudo apt-get update && sudo apt-get install -y ruby-full

# macOS (Homebrew)
brew install ruby

# Windows (Chocolatey)
choco install ruby

# Verify installation (all platforms)
ruby -v