Add status command

closes #1471 by adding the status command that prints the state of a
machine.

Signed-off-by: Sergio Botero <sergiobuj@gmail.com>

commands/commands.go

@@ -379,6 +379,12 @@ var Commands = []cli.Command{
 		Description: "Argument(s) are one or more machine names.",
 		Action:      cmdStart,
 	},
+	{
+		Name:        "status",
+		Usage:       "Get the status of a machine",
+		Description: "Argument is a machine name.",
+		Action:      cmdStatus,
+	},
 	{
 		Name:        "stop",
 		Usage:       "Stop a machine",

commands/status.go

@@ -0,0 +1,18 @@
+package commands
+
+import (
+	"fmt"
+
+	"github.com/docker/machine/log"
+
+	"github.com/codegangsta/cli"
+)
+
+func cmdStatus(c *cli.Context) {
+	host := getHost(c)
+	currentState, err := host.Driver.GetState()
+	if err != nil {
+		log.Errorf("error getting state for host %s: %s", host.Name, err)
+	}
+	fmt.Println(currentState)
+}

commands/status_test.go

@@ -0,0 +1 @@
+package commands

docs/reference/index.md

@@ -27,6 +27,7 @@ parent="smn_machine_ref"
 * [scp](scp.md)
 * [ssh](ssh.md)
 * [start](start.md)
+* [status](status.md)
 * [stop](stop.md)
 * [upgrade](upgrade.md)
-* [url](url.md)
+* [url](url.md)

docs/reference/status.md

@@ -0,0 +1,18 @@
+<!--[metadata]>
++++
+title = "status"
+description = "Get the status of a machine"
+keywords = ["machine, status, subcommand"]
+[menu.main]
+parent="smn_machine_subcmds"
++++
+<![end-metadata]-->
+
+# status
+
+Get the status of a machine.
+
+```
+$ docker-machine status dev
+Running
+```