Locate VBoxManage and complain if not found

boot2docker/cmds.go

@@ -27,6 +27,7 @@ func cmdSSH() int {
 		logf("%s is not registered.", B2D.VM)
 		return 1
 	case vmRunning:
+		// TODO What SSH client is used on Windows?
 		if err := cmd(B2D.SSH,
 			"-o", "StrictHostKeyChecking=no",
 			"-o", "UserKnownHostsFile=/dev/null",
@@ -234,7 +235,7 @@ func cmdStatus() int {
 // Initialize the boot2docker VM from scratch.
 func cmdInit() int {
 	if state := status(B2D.VM); state != vmUnregistered {
-		logf("%s already exists.\n")
+		logf("%q already exists.", B2D.VM)
 		return 1
 	}
 

boot2docker/main.go

@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"strconv"
 )
@@ -122,6 +123,11 @@ func run() int {
 		return 1
 	}
 
+	if _, err := exec.LookPath(B2D.VBM); err != nil {
+		logf("failed to locate VirtualBox management utility %q", B2D.VBM)
+		return 2
+	}
+
 	switch flag.Arg(0) {
 	case "download":
 		return cmdDownload()

todo.md

@@ -3,7 +3,7 @@
 ### Configuration
 - [X] modify standard values with enviroment variables
 - [ ] modify standard values with a config file `~/profiles`
-- [ ] check if all required software exists e.g. virtualbox,..
+- [X] check if all required software exists e.g. virtualbox,..
 
 ### Commands
 - [X] init            Create a new boot2docker VM.
@@ -21,4 +21,4 @@
 ### Build
 - [X] go get suport
 - [X] build with Dockerfile
-- [ ] Testcases
+- [ ] Testcases