diff --git a/bin/evaluate.py b/bin/evaluate.py
index a9692dd..a0870c3 100755
--- a/bin/evaluate.py
+++ b/bin/evaluate.py
@@ -2,6 +2,7 @@
 
 import sys
 import pathlib
+import os
 sys.path.append(str(pathlib.Path(__file__).absolute().parent.parent / 'src'))
 
 from nmreval.configs import check_for_config
@@ -20,6 +21,18 @@ from gui_qt import App
 app = App(['Team Rocket FTW!'])
 
 from gui_qt.main.mainwindow import NMRMainWindow
+from gui_qt.lib.backup import Backup
+
+backuping = Backup()
+pid = os.getpid()
+
+files = backuping.search_unsaved()
+print(files)
+
+bck_name = backuping.create_entry(pid)
+print(sys.executable, sys.argv)
+
+app.aboutToQuit.connect(backuping.close)
 
 mplQt = NMRMainWindow()
 mplQt.show()
diff --git a/src/gui_qt/_py/basewindow.py b/src/gui_qt/_py/basewindow.py
index e1534f4..5c0bff4 100644
--- a/src/gui_qt/_py/basewindow.py
+++ b/src/gui_qt/_py/basewindow.py
@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file 'src/resources/_ui/basewindow.ui'
+# Form implementation generated from reading ui file 'resources/_ui/basewindow.ui'
 #
-# Created by: PyQt5 UI code generator 5.15.9
+# Created by: PyQt5 UI code generator 5.15.10
 #
 # WARNING: Any manual changes made to this file will be lost when pyuic5 is
 # run again.  Do not edit this file unless you know what you are doing.
diff --git a/src/gui_qt/lib/backup.py b/src/gui_qt/lib/backup.py
new file mode 100644
index 0000000..5fa19ae
--- /dev/null
+++ b/src/gui_qt/lib/backup.py
@@ -0,0 +1,63 @@
+import os
+import sqlite3
+
+from ..Qt import QtCore
+
+DB_FILE = '/autohome/dominik/nmreval/nmreval.db'
+
+
+class Backup(QtCore.QObject):
+    def __init__(self):
+        super().__init__()
+        self.create_table()
+        self._pid = None
+
+    def create_table(self):
+        con = sqlite3.connect(DB_FILE)
+        con.execute(
+            "CREATE TABLE IF NOT EXISTS sessions (pid INTEGER NOT NULL, backup_file TEXT NOT NULL );"
+        )
+
+    def create_entry(self, pid: int):
+        con = sqlite3.connect(DB_FILE)
+        con.execute('INSERT INTO sessions VALUES(?, ?);',
+                    (pid, f'/autohome/dominik/nmreval/tmp_{pid}.nmr'))
+        con.commit()
+        con.close()
+        self._pid = pid
+
+        return
+
+    def remove_entry(self, pid: int = None):
+        if pid is None:
+            pid = self._pid
+
+        con = sqlite3.connect(DB_FILE)
+        cursor = con.execute('DELETE FROM sessions WHERE pid = ?;', (pid,))
+        res = cursor.execute('SELECT COUNT(sessions.pid) FROM sessions GROUP BY sessions.pid;')
+        con.commit()
+        print(res.fetchall())
+
+        con.close()
+
+    def close(self):
+        self.remove_entry()
+
+    def search_unsaved(self):
+        con = sqlite3.connect(DB_FILE)
+        cursor = con.cursor()
+        res = cursor.execute('SELECT sessions.pid, sessions.backup_file FROM sessions;')
+        con.commit()
+        data = res.fetchall()
+        con.close()
+
+        missing_processes = []
+
+        for pid, fname in data:
+            try:
+                os.kill(pid, 0)
+            except ProcessLookupError:
+                missing_processes.append((pid, fname))
+
+        return missing_processes
+
diff --git a/src/gui_qt/main/mainwindow.py b/src/gui_qt/main/mainwindow.py
index 87d6e2c..0d5f0c0 100644
--- a/src/gui_qt/main/mainwindow.py
+++ b/src/gui_qt/main/mainwindow.py
@@ -22,6 +22,7 @@ from ..graphs.graphwindow import QGraphWindow
 from ..graphs.movedialog import QMover
 from ..io.fcbatchreader import QFCReader
 from ..io.filedialog import *
+from ..lib.backup import Backup
 from ..lib.iconloading import make_action_icons, get_icon
 from ..lib.pg_objects import RegionItem
 from ..lib.starter import make_starter
@@ -54,6 +55,7 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
 
         self.management = UpperManagement(self)
 
+
         self.fitlimitvalues = [None, None]
         self.fitpreview = []
         self._fit_plot_id = None
@@ -89,7 +91,8 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.fit_timer = QtCore.QTimer()
         self.fit_timer.setInterval(500)
         self.fit_timer.timeout.connect(
-            lambda: self.status.setText(f'Fit running... ({self.management.fitter.step} evaluations)'))
+            lambda: self.status.setText(f'Fit running... ({self.management.fitter.step} evaluations)')
+        )
 
     def _init_gui(self):
         self.setupUi(self)
@@ -235,8 +238,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         self.actionNext_window.triggered.connect(lambda: self.area.activateNextSubWindow())
         self.actionPrevious.triggered.connect(lambda: self.area.activatePreviousSubWindow())
 
-        self.closeSignal.connect(self.close)
-
         self.action_norm_max.triggered.connect(lambda: self.management.apply('norm', ('max',)))
         self.action_norm_max_abs.triggered.connect(lambda: self.management.apply('norm', ('maxabs',)))
         self.action_norm_first.triggered.connect(lambda: self.management.apply('norm', ('first',)))
@@ -864,10 +865,6 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
     def item_from_graph(self, item, graph_id):
         self.management.graphs[graph_id].remove_external(item)
 
-    def closeEvent(self, evt):
-        # self._write_settings()
-        self.close()
-
     @QtCore.pyqtSlot(int)
     def request_data(self, idx):
         idd = self.datawidget.get_indexes(idx=idx-1)
@@ -1097,6 +1094,8 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         # remove backup file when closing
         self.__backup_path.unlink(missing_ok=True)
 
+        print('Close me', self.sender())
+
         super().close()
 
     def read_state(self):