Index: sources/storage/FileHandler.cpp
===================================================================
diff -u -r5687815256ae070a9a207107088e3f72dd464da0 -r45a6996f6643db2f20520ba60e952c647b2d0501
--- sources/storage/FileHandler.cpp	(.../FileHandler.cpp)	(revision 5687815256ae070a9a207107088e3f72dd464da0)
+++ sources/storage/FileHandler.cpp	(.../FileHandler.cpp)	(revision 45a6996f6643db2f20520ba60e952c647b2d0501)
@@ -58,6 +58,22 @@
     ++count;
 }
 
+bool FileHandler::append(const QString &vSource, const QString &vTarget, bool vRemoveSource) {
+    bool ok = false;
+    QString content;
+    ok = read(vSource, content);
+    if ( ! ok ) goto lOut;
+
+    ok = write(vTarget, content, true);
+    if ( ! ok ) goto lOut;
+
+    if ( ! vRemoveSource ) goto lOut;
+    ok = QFile::remove(vSource);
+    if ( ! ok ) goto lOut;
+
+lOut:
+    return ok;
+}
 /*!
  * \brief   FileHandler::write
  * \details writes content vContent into the file vFileName.
@@ -131,6 +147,30 @@
 }
 
 /*!
+ * \brief   FileHandler::backupFile
+ * \details Calls the gzip command
+ *          The vPrepend file is prepended to the vDestination file,
+ *          gets compressed with the name of the vDestination file appended with .gz
+ *          The two files of vPrepend and vDestination will be delitted in this function.
+ * \param   vSource         - file to be prepended to the vDestination file before compression.
+ * \param   vDestination    - the file to be prepared and compressed, also the base name of the compressed file.
+ * \return  NOT FINALIZED YET.
+ * \note    THIS FUNCTION IS NOT TESTED DUE TO ISSUES IN RETURN VALUE CHECK OF TWO PIPED COMMAND.
+ */
+int FileHandler::backupFile(const QString &vPrepend, const QString &vDestination)
+{
+    QString cmd = QString("cat %1 %2 | gzip > %2.%3")
+            .arg(vPrepend)
+            .arg(vDestination)
+            .arg(Storage::gzipExt)
+            ;
+    int result = QProcess::execute(cmd, {});
+    QFile::remove(vPrepend);
+    QFile::remove(vDestination);
+    return result;
+}
+
+/*!
  * \brief   FileHandler::copyFolder
  * \details Copies all the file and folders recursively.
  * \param   vSource      - The source folder