# `env_var`

Optional

Defines an environment variable. This is purely decorative for the --help text.

title  'API Tools'

env_var 'API_KEY', 'Your API key'
action 'connect' do
  api_key = ENV['API_KEY']
  abort 'Please provide an API_KEY' unless api_key

  say 'Connecting...'
end

$ run --help
API Tools

Usage:
  run connect
  run (--help | -h)

Options:
  --help, -h
    Show this message

Environment Variables:
  API_KEY
    Your API key

$ run connect
Please provide an API_KEY

# env_var

# `env_var`