Index: sources/storage/FileHandler.cpp
===================================================================
diff -u -r80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803 -r4fc7cdc599de191e91296623ec783542b7a3c7b8
--- sources/storage/FileHandler.cpp	(.../FileHandler.cpp)	(revision 80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803)
+++ sources/storage/FileHandler.cpp	(.../FileHandler.cpp)	(revision 4fc7cdc599de191e91296623ec783542b7a3c7b8)
@@ -319,6 +319,36 @@
 }
 
 /*!
+ * \brief   FileHandler::isDirSame
+ * \details Compare the two folder's content
+ * \param   vDir1 - directory path 1
+ * \param   vDir2 - directory path 2
+ * \return  true if the two directories are the same, false otherwise
+ */
+bool FileHandler::isDirSame(const QString &vDir1, const QString &vDir2)
+{
+    // disabled coco begin validated: This needs user interaction to check the file system
+    // has been tested manually since currently it is the only place it has been used.
+    bool isSame = false;
+    QString cmd = "diff";
+    QStringList arguments;
+    arguments << vDir1 << vDir2;
+
+    QProcess diffProcess;
+    diffProcess.start(cmd, arguments);
+
+    bool processCompleted = diffProcess.waitForFinished();
+    if ( processCompleted )
+    {
+        QString output = diffProcess.readAll();
+        isSame = output.isEmpty(); // non empty indicate difference exists
+        //DEBUG: qDebug()<< output << output.isEmpty();
+    }
+
+    return isSame;
+}
+
+/*!
  * \brief   FileHandler::find
  * \details The function to find files.
  *          It mainly been implemented to find the files are using some amount of total storage in the vPath by percentage,