Usage: greet [--config-file FILE_PATH] [-g|--greeting GREETING] [SUBJECT] [-p|--polite]

All settings:
  Show this help text
  switch: -h|--help

  Output version information
  switch: --version

  Path to the configuration file
  option: --config-file FILE_PATH
  env: GREET_CONFIG_FILE FILE_PATH

  Greeting to use
  option: -g|--greeting GREETING
  env: GREET_GREETING GREETING
  config:
    greeting: # or null
      <string>
  default: "Hello"
  example: Greetings

  Who to greet
  argument: SUBJECT
  default: "world"

  Whether to be polite
  switch: -p|--polite
  env: GREET_POLITE ANY
  config:
    polite: # or null
      <boolean>
  default: False

Options:
  -h|--help     Show this help text                                               
  --version     Output version information                                        
  --config-file Path to the configuration file                                    
  -g|--greeting Greeting to use                default: "Hello" example: Greetings
  SUBJECT       Who to greet                   default: "world"                   
  -p|--polite   Whether to be polite           default: False                     

Environment Variables:
  GREET_CONFIG_FILE FILE_PATH   Path to the configuration file                                        
  GREET_GREETING GREETING       Greeting to use                  default: "Hello"   example: Greetings
  GREET_POLITE ANY              Whether to be polite             default: False                       

Configuration Values:
  Greeting to use
  default: "Hello"
  example: Greetings
  greeting:
    # or null
    <string>
  Whether to be polite
  default: False
  polite:
    # or null
    <boolean>