diff --git a/lib/adb.js b/lib/adb.js
index d2e9c96..fb7c3ce 100644
--- a/lib/adb.js
+++ b/lib/adb.js
@@ -36,15 +36,23 @@ function ADBObject() {
     };
 
     this.getProperty = function(id, name) {
-        return SHELL.exec([this.binPath, "-s", id, "shell", "getprop", name]);
+        return this.sendShell(id, ["getprop", name]);
     };
   
     this.disableService = function(id, name) {
-       return SHELL.exec([this.binPath, "-s", id, "shell", "svc", name, "disable"]);
+       return this.sendShell(id, ["svc", name, "disable"]);
     };
 
     this.enableService = function(id, name) {
-       return SHELL.exec([this.binPath, "-s", id, "shell", "svc", name, "enable"]);
+       return this.sendShell(id, ["svc", name, "enable"]);
+    };
+
+    this.sendShell = function(id, args) {
+        try {
+            return SHELL.exec([this.binPath, "-s", id, "shell"].concat(args));
+        } catch (e) {
+            return "";
+        }            
     };
 }
 
@@ -52,6 +60,6 @@ exports.create = function() {
     return new ADBObject();
 };
 
-exports.VERSIONINFO = "Android Debug Bridge Interface (adb.js) version 0.1";
+exports.VERSIONINFO = "Android Debug Bridge Interface (adb.js) version 0.2";
 exports.global = global;
 exports.require = global.require;