$ docker-machine -v
docker-machine version 0.16.1, build cce350d7
$ sudo curl -L https://github.com/docker/machine/releases/download/v0.16.1/docker-machine-`uname -s`-`uname -m` > /usr/local/bin/docker-machine
$ sudo chmod +x /usr/local/bin/docker-machine
$ docker-machine -v
docker-machine version 0.16.1, build cce350d7