Ruby Primer is a set of interactive lessons that run in a text console. It was originally based on the excellent primer maintained by C42 Engineering at RubyMonk.com, but that site was taken down in 2025. The lessons have been preserved here.

• Language: Ruby 3.2+
• Dependencies:
  • Bundler for gem management
  • RSpec for testing
  • Ruby-Figlet for ASCII art
  • Colorize for colored output
• Image Generation:
  • Pandoc
  • XeLaTeX
  • ImageMagick
  • IBM Plex Serif Light font
• Terminal Image Display: viu for inline images in Kitty, built-in support for iTerm2

• iTerm2 on macOS
• Kitty on macOS or Linux

• XeLaTeX (with IBM Plex Serif Light font)
• ImageMagick

0. Clone this repository
1. Run ./install.sh to install dependencies and set up the environment.
2. Run rp to start the interactive Ruby lessons.
3. Follow the on-screen instructions to navigate lessons and run examples/tests.