-bash: docker-machine: command n

-bash: docker-machine: command not found

Docker Machine 则是一个安装和管理 Docker 的工具。它有自己的命令行工具：docker-machine。
需要安装Docker Machine 以支持 docker-macine 命令。
Docker Machine官网地址：https://docs.docker.com/machine/install-machine/

安装步骤：
1、Install Docker.（安装 Docker，如果已有Docker则跳过此步骤）

2、Download the Docker Machine binary and extract it to your PATH.
安装Docker Machine。区分不同环境，直接执行命令即可

If you are running on macOS:

$ base=https://github.com/docker/machine/releases/download/v0.14.0 &&
  curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/usr/local/bin/docker-machine &&
  chmod +x /usr/local/bin/docker-machine

If you are running on Linux:

$ base=https://github.com/docker/machine/releases/download/v0.14.0 &&
  curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/tmp/docker-machine &&
  sudo install /tmp/docker-machine /usr/local/bin/docker-machine

If you are running with Windows with Git BASH:

$ base=https://github.com/docker/machine/releases/download/v0.14.0 &&
  mkdir -p "$HOME/bin" &&
  curl -L $base/docker-machine-Windows-x86_64.exe > "$HOME/bin/docker-machine.exe" &&
  chmod +x "$HOME/bin/docker-machine.exe"

3、执行命令 检查是否安装成功

#docker-machine version

$ docker-machine version

docker-machine version 0.14.0, build 9371605

如果命令docker-machine version 运行之后报错 可能是github 上machine不存在 需要更换下