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