Merge pull request #38 from bronson/wsl

Support Windows Subsystem on Linux

macos-guest-virtualbox.sh

@@ -90,13 +90,20 @@ fi
 # VirtualBox in ${PATH}
 
 if [ -z "$(VBoxManage -v 2>/dev/null)" ]; then
-    echo "Please make sure VirtualBox is installed, and that the path to"
-    echo "the VBoxManage executable is in the PATH variable."
-    if [ -n "${windows}" ]; then echo -n "VBoxManage is usually installed in"
-        echo "/cygdrive/c/Program Files/Oracle/VirtualBox"
-        echo "and can be added with PATH=\"\${PATH}:/cygdrive/c/<...>\""
+    if [ -n "$('/mnt/c/Program Files/Oracle/VirtualBox/VBoxManage.exe' -v 2>/dev/null)" ]; then
+        # If VBoxManage.exe is in the standard install location, use it.
+        function VBoxManage() {
+            '/mnt/c/Program Files/Oracle/VirtualBox/VBoxManage.exe' "$@"
+        }
+    elif [ -n "$('/cygdrive/c/Program Files/Oracle/VirtualBox/VBoxManage.exe' -v 2>/dev/null)" ]; then
+        function VBoxManage() {
+            '/cygdrive/c/Program Files/Oracle/VirtualBox/VBoxManage.exe' "$@"
+        }
+    else
+        echo "Please make sure VirtualBox is installed, and that the path to"
+        echo "the VBoxManage executable is in the PATH variable."
+        exit
     fi
-    exit
 fi
 
 # dmg2img