help

Usage: docker-machine help [arg...]

Shows a list of commands or help for one command

Usage: docker-machine help subcommand

For example:

$ docker-machine help config
Usage: docker-machine config [OPTIONS] [arg...]

Print the connection config for machine

Description:
   Argument is a machine name.

Options:

   --swarm      Display the Swarm config instead of the Docker daemon

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https://docs.docker.com/v1.10/machine/reference/help/