add shutdown command

cmd/power/shutdown.go

@@ -0,0 +1,49 @@
+package power
+
+import(
+	"fmt"
+	"os"
+
+	"github.com/codegangsta/cli"	
+	"github.com/rancherio/os/config"
+)
+
+func Main() {
+	app := cli.NewApp()
+
+	app.Name = os.Args[0]
+	app.Usage = "Control and configure RancherOS"
+	app.Version = config.VERSION
+	app.Author = "Rancher Labs, Inc."
+	app.Email = "sid@rancher.com"
+	app.EnableBashCompletion = true
+	app.Action = shutdown
+	app.Flags = []cli.Flag{	
+				cli.StringFlag {
+					Name: "r, R",
+					Usage: "reboot after shutdown",
+				},
+				cli.StringFlag {
+					Name: "h",
+					Usage: "halt the system",
+				},
+			}
+	app.HideHelp = true
+	app.Run(os.Args)
+}
+
+
+func shutdown(c *cli.Context) {
+	reboot := c.String("r")
+	poweroff := c.String("h")	
+
+	fmt.Println(reboot)
+	fmt.Println(poweroff)
+
+	if reboot == "now" {
+		Reboot()
+	} else if poweroff == "now" {
+		PowerOff()
+	}
+}
+

config/default.go

@@ -37,6 +37,7 @@ func NewConfig() *Config {
 					"-v=/init:/sbin/halt:ro " +
 					"-v=/init:/sbin/poweroff:ro " +
 					"-v=/init:/sbin/reboot:ro " +
+					"-v=/init:/sbin/shutdown:ro " +
 					"-v=/init:/usr/bin/cloud-init:ro " +
 					"-v=/init:/usr/bin/tlsconf:ro " +
 					"-v=/init:/usr/bin/rancherctl:ro " +

main.go

@@ -40,6 +40,7 @@ func main() {
 	registerCmd("/sbin/poweroff", power.PowerOff)
 	registerCmd("/sbin/reboot", power.Reboot)
 	registerCmd("/sbin/halt", power.Halt)
+	registerCmd("/sbin/shutdown", power.Main)
 	registerCmd("/usr/bin/respawn", respawn.Main)
 	registerCmd("/usr/sbin/rancherctl", control.Main)
 	registerCmd("/usr/bin/cloud-init", cloudinit.Main)