Update nodemgmt-scripts.sh

nodemgmt-scripts.sh

@@ -238,7 +238,13 @@ DELSITES(){
 	echo ""
 	echo -e -n "${idsCL[LightYellow]}Please select a site from above from above:${idsCL[Default]} "
 	read -n 2 selsite
-	echo $selsite
+	echo ""
+	if [ -z ${SITES[$selsite]} ]; then
+		echo "Thats an invaild option,"
+		echo "please select a valid option only."
+		DELSITES
+		exit 0
+	fi
 	if [ -z $action ] || [ "${action}" = "gui" ]; then
 		ENTER2CONTINUE
 	fi