diff -r 000000000000 -r 6474c204b198 browser/devtools/inspector/inspector-commands.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/inspector/inspector-commands.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const gcli = require("gcli/index");
+
+exports.items = [{
+  name: "inspect",
+  description: gcli.lookup("inspectDesc"),
+  manual: gcli.lookup("inspectManual"),
+  params: [
+    {
+      name: "selector",
+      type: "node",
+      description: gcli.lookup("inspectNodeDesc"),
+      manual: gcli.lookup("inspectNodeManual")
+    }
+  ],
+  exec: function(args, context) {
+    let target = context.environment.target;
+    let gDevTools = require("resource:///modules/devtools/gDevTools.jsm").gDevTools;
+
+    return gDevTools.showToolbox(target, "inspector").then(toolbox => {
+      toolbox.getCurrentPanel().selection.setNode(args.selector, "gcli");
+    });
+  }
+}];