diff --git a/vm_control.sh b/vm_control.sh
new file mode 100644
index 0000000..dfb3d6d
--- /dev/null
+++ b/vm_control.sh
@@ -0,0 +1,131 @@
+#!/bin/bash
+# ./vm_control.sh [start|stop]
+
+# der Pfad im Web-Verzeichnis von vm_control.php ist anzupassen:
+vm_control_php_path="/volume1/web/vm_control.php"
+
+################################################################################
+#                       ab hier nichts mehr ändern
+# ------------------------------------------------------------------------------
+
+saved_IFS=$IFS
+vm_state_path="$(dirname "$vm_control_php_path")/vm_state.php"
+
+if [ ! $(which inotifywait) ]; then
+    echo "inotify-tools nicht installiert"
+    exit 1
+elif [ $(whoami) != "root" ]; then
+    echo "ERROR: you are not root!"
+    exit 1
+fi
+
+save_web_state() {
+# aktuelle Einstellungen aus Statusfile auslesen und für den späteren Vergleich in diesem Skript speichern:
+    vm_web_list=$(grep "=>" "$vm_state_path" | grep -v "letzter Zugriff")
+    IFS=$'\012'
+    for line in $vm_web_list; do
+        IFS=$saved_IFS
+        synosetkeyvalue "$0" "web_$(awk -F\' '{print $2}' <<<"$line")" "$(awk -F\' '{print $4}' <<<"$line")"
+    done
+}
+
+save_host_state() {
+# VMs initialisieren - aktuelle Status der VMs auslesen und in diesem Skript speichern:
+    vm_list=$(synowebapi --exec api=SYNO.Virtualization.API.Guest method=list version=1 | jq -r .data.guests[].guest_name 2>/dev/null)
+    echo "vm_list: $vm_list"
+    IFS=$'\012'
+    for line in $vm_list; do
+        IFS=$saved_IFS
+        vm_status=$(synowebapi --exec api=SYNO.Virtualization.API.Guest version=1 method=get runner=admin guest_name="$line" | jq -r .data.status 2>/dev/null)
+        echo "status: $vm_status"
+        synosetkeyvalue "$0" "host_${line}" "${vm_status}"
+    done
+}
+
+inotify_start() {
+    PROZESSID=$(ps aux | grep -v "grep" | grep -E "inotifywait.*vm_state.php" | awk -F' ' '{print $2}')
+
+    if [[ -z $PROZESSID ]];then
+        echo "Überwachung von ${vm_state_path} wird gestartet"
+        save_host_state
+        save_web_state
+
+        inotifywait "${vm_state_path}" --event create,modify --monitor --timeout -1 | 
+            while read line ; do 
+                vm_web_list=$(grep "=>" "$vm_state_path" | grep -v "letzter Zugriff")
+                IFS=$'\012'
+                for line in $vm_web_list; do
+                    IFS=$saved_IFS
+                    vm=$(awk -F\' '{print $2}' <<<"$line")
+                    web_state=$(awk -F\' '{print $4}' <<<"$line")
+                    if [ "$(get_key_value "$0" "web_$vm")" = "$web_state" ]; then
+                        echo "keine Änderung für $vm (web_state online $web_state / web_state saved $(get_key_value "$0" "web_$vm"))"
+                        continue
+                    fi
+
+                    # wenn Änderung gefunden wurde:
+                    case "$web_state" in
+                        on)
+                            echo "starte $vm"
+                            synowebapi --exec api=SYNO.Virtualization.API.Guest.Action version=1 method=poweron runner=admin guest_name="$vm" >/dev/null 2>&1
+                            continue
+                            ;;
+                        off)
+                            echo "beende $vm"
+                            synowebapi --exec api=SYNO.Virtualization.API.Guest.Action version=1 method=shutdown runner=admin guest_name="$vm" >/dev/null 2>&1
+                            continue
+                            ;;
+                    esac
+                    synosetkeyvalue "$0" "web_$vm" "$web_state"
+                done
+                save_host_state
+            done >/dev/null 2>&1 &
+    else
+        echo "läuft bereits …"
+    fi
+
+}
+
+inotify_stop() 
+{
+# Überwachung stoppem:
+# --------------------------------------------------------------
+    PROZESSID=$(ps aux | grep -v "grep" | grep -E "inotifywait.*vm_state.php" | awk -F' ' '{print $2}')
+
+    if [[ ! -z $PROZESSID ]];then
+        kill $PROZESSID
+        if [ $? = 0 ]; then
+            echo "Überwachung beendet"
+            exit 0
+        else
+            echo "FEHLER beim Beenden der Überwachung!"
+            exit 1
+        fi
+    else
+        echo "läuft nicht … "
+    fi
+
+}
+
+# start-stop-Überwachung:
+    case "$1" in
+        start)
+            inotify_start
+#           inotify_start & 
+            echo "läuft … "
+            exit 0
+            ;;
+        stop)
+            inotify_stop
+            exit 0
+            ;;
+    esac
+
+exit 0
+
+################################################################################
+#                       Nicht-Exekutiv-Bereich
+# ------------------------------------------------------------------------------
+#
+# dynamisch angepassten Werte:
+# ------------------------------------------------