rbenv Cheat Sheet

# list all available versions

rbenv install -l

# install a specific Ruby version

rbenv install 2.7.1

# Install rbenv

brew install rbenv

# Set a local application-specific Ruby version

rbenv local 2.0.0

# Set a global Ruby version (default version)

rbenv global 2.7.1

# Completely uninstall rbenv

brew uninstall rbenv

# Set a shell-specific Ruby version by setting the RBENV_VERSION environment variable in your shell.

rbenv shell 2.2.1

# List all Ruby versions known to rbenv

rbenv versions

# Display the current active Ruby version (current opened project)

rbenv version

# Run this command after you install a new version of Ruby or install a gem that provides commands if you're using rbenv

rbenv rehash

# Display the full path to the executable that rbenv will invoke

rbenv which irb