Imports github.com/docker/machine/libmachine/state github.com/docker/machine/libmachine/mcnutils github.com/docker/machine/libmachine/log github.com/docker/machine/libmachine/drivers github.com/docker/machine/libmachine/mcnflag github.com/docker/machine/libmachine/ssh Standard library imports bufio bytes errors fmt io io/ioutil math/rand net os os/exec path/filepath regexp runtime strconv strings time