Izmjenjena struktura, dodan backand

web/node_modules/macaddress/lib/unix.js

@@ -0,0 +1,16 @@
+var exec = require('child_process').exec;
+
+module.exports = function (iface, callback) {
+    exec("ifconfig " + iface, function (err, out) {
+        if (err) {
+            callback(err, null);
+            return;
+        }
+        var match = /[a-f0-9]{2}(:[a-f0-9]{2}){5}/.exec(out.toLowerCase());
+        if (!match) {
+            callback("did not find a mac address", null);
+            return;
+        }
+        callback(null, match[0].toLowerCase());
+    });
+};