Command: help
The help command to display help about a particular command, or list all available commands.
Usage
accio help [<command name>]
If no argument is specified, a summary of available commands will be provided. If a command name is specified, information about it will be provided.
Exit codes
0: Success.1: Bad command-line, there was an error with the arguments/options/environment variables combination. Notably happens if specified command does not exist.