diff --git a/check_for_old_files.sh b/check_for_old_files.sh
new file mode 100755
index 0000000..6fd6065
--- /dev/null
+++ b/check_for_old_files.sh
@@ -0,0 +1,433 @@
+#!/usr/bin/env bash
+
+script_name="$(basename $(realpath $0))"
+script_dir="$(dirname $(realpath $0))"
+
+conf_dir="${script_dir}/conf"
+
+declare -a unsorted_website_arr
+declare -a website_arr
+
+log_file="$(mktemp)"
+
+backup_date=$(date +%Y-%m-%d-%H%M)
+
+
+# =============
+# --- Some functions
+# =============
+
+clean_up() {
+
+   # Perform program exit housekeeping
+   rm -f $log_file
+   blank_line
+   exit $1
+}
+
+is_number() {
+
+   return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);
+
+   # - also possible
+   # -
+   #[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
+   #return $([[ ! -z "${1##*[!0-9]*}" ]])
+}
+
+echononl(){
+   echo X\\c > /tmp/shprompt$$
+   if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
+      echo -e -n "$*\\c" 1>&2
+   else
+       echo -e -n "$*" 1>&2
+   fi
+   rm /tmp/shprompt$$
+}
+echo_done() {
+   if $terminal ; then
+      echo -e "\033[75G[ \033[32mdone\033[m ]"
+   else
+      echo " [ done ]"
+   fi
+}
+echo_ok() {
+   if $terminal ; then
+      echo -e "\033[75G[ \033[32mok\033[m ]"
+   else
+      echo " [ ok ]"
+   fi
+}
+echo_warning() {
+   if $terminal ; then
+      echo -e "\033[75G[ \033[33m\033[1mwarn\033[m ]"
+   else
+      echo " [ warning ]"
+   fi
+}
+echo_failed(){
+   if $terminal ; then
+      echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
+   else
+      echo ' [ failed! ]'
+   fi
+}
+echo_skipped() {
+   if $terminal ; then
+      echo -e "\033[75G[ \033[37mskipped\033[m ]"
+   else
+      echo " [ skipped ]"
+   fi
+}
+fatal (){
+   echo ""
+   echo ""
+   if $terminal ; then
+      echo -e "\t[ \033[31m\033[1mFatal\033[m ]: \033[37m\033[1m$*\033[m"
+      echo ""
+      echo -e "\t\033[31m\033[1m           Script will be interrupted..\033[m\033[m"
+   else
+      echo "fatal: $*"
+      echo "Script will be interrupted.."
+   fi
+   clean_up 1
+}
+
+error(){
+   echo ""
+   if $terminal ; then
+      echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*"
+   else
+      echo "Error: $*"
+   fi
+   echo ""
+}
+
+warn (){
+   echo ""
+   if $terminal ; then
+      echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
+   else
+      echo "Warning: $*"
+   fi
+   echo ""
+}
+
+info (){
+   echo ""
+   if $terminal ; then
+      echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*"
+   else
+      echo "Info: $*"
+   fi
+   echo ""
+}
+
+# - Remove leading/trailling whitespaces
+# -
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
+## - Check if a given array (parameter 2) contains a given string (parameter 1)
+## -
+containsElement () {
+   local e
+   for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
+   return 1
+}
+
+blank_line() {
+   if $terminal ; then
+      echo ""
+   fi
+}
+
+
+
+# ----------
+# - Jobhandling 
+# ----------
+
+# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
+# -
+trap clean_up SIGHUP SIGINT SIGTERM
+
+## - 
+while IFS='' read -r -d '' _conf_file ; do
+   source $_conf_file
+   if [[ -n "$WEBSITE" ]] ; then
+      unsorted_website_arr+=("${WEBSITE}:$_conf_file")
+   fi
+   WEBSITE=""
+done  < <(find "${conf_dir}" -maxdepth 1 -type f -name "*.conf" -print0)
+
+if [[ ${#unsorted_website_arr} -eq 0 ]]; then
+   fatal "No configuration files found in '${script_dir}/conf' or no website configured!"
+fi
+
+# - Sort array
+# -
+IFS=$'\n' website_arr=($(sort <<<"${unsorted_website_arr[*]}"))
+
+
+
+# =============
+# --- Some 
+# =============
+
+# - Support systemd ?
+# -
+if [[ "X$(which systemd)" = "X" ]]; then
+   SYSTEMD_EXISTS=false
+else
+   SYSTEMD_EXISTS=true
+fi
+
+# - Running in a terminal?
+# -
+if [[ -t 1 ]] ; then
+      terminal=true
+else
+   terminal=false
+fi
+
+#clear
+
+echo ""
+echo ""
+echo ""
+echo -e "\033[32m-----\033[m"
+echo -e "Add User to Group - \033[1mBoth, User and Group has to exist\033[m"
+echo -e "\033[32m-----\033[m"
+
+
+WEBSITE=
+_OK=false
+echo ""
+echo "Cloud instance that you want to change?"
+echo ""
+declare -i i=0
+for _site in ${website_arr[@]} ; do
+   IFS=':' read -a _arr <<< ${_site}
+   echo "   [$i] ${_arr[0]}"
+   ((i++))
+done
+echo
+echononl "   Eingabe: "
+while ! $_OK ; do
+read _IN
+   if is_number "$_IN" && [[ -n ${website_arr[$_IN]} ]]; then
+      IFS=':' read -a _arr <<< ${website_arr[$_IN]}
+      conf_file=${_arr[1]}
+      _OK=true
+   else
+      echo ""  
+      echo -e "\tFalsche Eingabe !"
+      echo ""
+      echononl "   Eingabe: "
+   fi
+done
+
+
+echo ""
+echononl "   Include Configuration file.."
+if [[ ! -f $conf_file ]]; then
+   echo_failed
+   fatal "Missing configuration file '$conf_file'"
+else
+   source $conf_file
+   echo_ok
+fi
+echo ""
+
+
+# =============
+# --- Some checks
+# =============
+
+DEFAULT_WEB_BASE_DIR="/var/www/$WEBSITE"
+DEFAULT_HTTP_USER="www-data"
+DEFAULT_HTTP_GROUP="www-data"
+DEFAULT_PHP_ENGINE="FPM"
+
+
+if [[ -z ${WEBSITE} ]] ; then
+   fatal "No website given (parameter 'WEBSITE')"
+fi
+
+DEFAULT_WEB_BASE_DIR="/var/www/$WEBSITE"
+
+[[ -n "$WEB_BASE_DIR" ]] || WEB_BASE_DIR=$DEFAULT_WEB_BASE_DIR
+
+if [[ ! -d ${WEB_BASE_DIR} ]] ; then
+   fatal "Web base directory not found (parameter 'WEB_BASE_DIR')"
+fi
+
+[[ -n "$PHP_ENGINE" ]] || PHP_ENGINE=$DEFAULT_PHP_ENGINE
+
+# Check PHP Version
+#
+if [[ "$PHP_ENGINE" = "FPM" ]] ; then
+   if [[ -z "$PHP_VERSION" ]] ; then
+      if [[ -z "$VHOST_CONFIG_FILE" ]] ; then
+         if [[ -f "/usr/local/apache2/conf/vhosts/${WEBSITE}.conf.php-fpm" ]] ; then
+            VHOST_CONFIG_FILE="/usr/local/apache2/conf/vhosts/${WEBSITE}.conf.php-fpm"
+         elif [[ -f "/usr/local/apache2/conf/vhosts/${WEBSITE}.conf" ]] ; then
+            VHOST_CONFIG_FILE="/usr/local/apache2/conf/vhosts/${WEBSITE}.conf"
+         elif [[ -f "/etc/apache2/sites-enabled/${WEBSITE}.conf" ]] ; then
+            VHOST_CONFIG_FILE="/etc/apache2/sites-enabled/${WEBSITE}.conf"
+         fi
+      fi
+      PHP_VERSION="$(grep -o -E "php-?.{1}\..{1}-fpm" $VHOST_CONFIG_FILE | grep -o -E ".{1}\..{1}")"
+      if [[ -z "$PHP_VERSION" ]] ; then
+         fatal "PHP Version must be givven if running PHP-FPM engine (parameter 'PHP_VERSION')"
+      fi
+   fi
+fi
+
+if [[ "$DATABASE_TYPE" != "postgres" ]] && [[ "$DATABASE_TYPE" != "mysql" ]]; then
+   fatal "Wrong or missing database type (parameter 'DATABASE_TYPE')"
+fi
+
+if [[ -z "$DATABASE_NAME" ]]; then
+   fatal "Missing database name (parameter 'DATABASE_NAME')"
+fi
+
+if [[ "$DATABASE_TYPE" = "mysql" ]] && [[ -z "$MYSQL_CREDENTIALS" ]]; then
+   fatal "No Database Credentials for MySQL given (parameter 'MYSQL_CREDENTIALS')"
+fi
+
+if [[ "$DATABASE_TYPE" = "postgres" ]]; then
+   if [[ -z "$PSQL_USER" ]] || [[ -z "$PSQL_PASS" ]]; then
+      fatal "No Database Credentials for PostgreSQL given (parameters: 'PSQL_USER' 'PSQL_PASS'"
+   fi
+fi
+
+# - Determin user/group of the webserver
+# -
+httpd_binary="`which httpd`"
+if [ -z "$httpd_binary" ]; then
+   httpd_binary="$(ps -axu | grep httpd |  grep -e "^root" | grep -v grep | awk '{print$11}')"
+   if [ -z "$httpd_binary" ]; then
+      if [ -x "/usr/local/apache2/bin/httpd" ]; then
+         httpd_binary="/usr/local/apache2/bin/httpd"
+      fi
+   fi
+fi
+if [ -x "$httpd_binary" ];then
+
+   # - Determin websever user
+   # -
+   _HTTP_USER="`$httpd_binary -t -D DUMP_RUN_CFG | grep -i -e "^User" | awk '{print$2}' | cut -d\"=\" -f2 | tr -d '"'`"
+   _HTTP_GROUP="`$httpd_binary -t -D DUMP_RUN_CFG | grep -i -e "^Group" | awk '{print$2}' | cut -d\"=\" -f2 | tr -d '"'`"
+
+   # - Is webserver running ?
+   # -
+   PID=$(ps aux | grep "$(realpath $httpd_binary)" | grep -e "^root" | grep -v grep | awk '{print$2}')
+   if [[ "X${PID}X" = "XX" ]] ;then
+      IS_HTTPD_RUNNING=false
+   else
+      IS_HTTPD_RUNNING=true
+   fi
+fi
+
+if [[ -n "$_HTTP_USER" ]] ; then
+   if [[ -n "$HTTP_USER" ]] && [[ "$_HTTP_USER" != "$HTTP_USER" ]]; then
+      warn "The script has determined \033[1;37m${_HTTP_USER}\033[m as Webservers user. This\n                     value differs from the value given in your configuration file, \n                     which is \033[1;37m${HTTP_USER}\033[m and takes precedence."
+   else
+      HTTP_USER=$_HTTP_USER
+   fi
+else
+   [[ -n "$HTTP_USER" ]] || HTTP_USER=$DEFAULT_HTTP_USER
+fi
+if [[ -n "$_HTTP_GROUP" ]] ; then
+   if [[ -n "$HTTP_GROUP" ]] && [[ "$_HTTP_GROUP" != "$HTTP_GROUP" ]]; then
+      warn "The script has determined \033[1;37m${_HTTP_GROUP}\033[m as Webservers group. This\n                     value differs from the value given in your configuration file, \n                     which is \033[1;37m${HTTP_GROUP}\033[m and takes precedence."
+   else
+      HTTP_GROUP=$_HTTP_GROUP
+   fi
+else
+   [[ -n "$HTTP_GROUP" ]] || HTTP_GROUP=$DEFAULT_HTTP_GROUP
+fi
+
+CURRENT_INSTALL_DIR=`realpath ${WEB_BASE_DIR}/nextcloud`
+CURRENT_DATA_DIR=`realpath ${WEB_BASE_DIR}/data`
+CURRENT_VERSION=`basename $CURRENT_INSTALL_DIR | cut -d"-" -f2`
+
+
+
+echo ""
+echo -e "\033[1;32mStarting Script for  \033[1;37m${WEBSITE}\033[m"
+echo ""
+echo -e   "   Cloud instance to be changed.........: $WEBSITE"
+echo ""
+echo -e   "   Current version of nextcloud.........: $CURRENT_VERSION"
+echo ""
+echo ""
+echo ""
+echo -e   "   Web base directory...................: $WEB_BASE_DIR"
+echo ""
+echo -e   "   Webserver user.......................: $HTTP_USER"
+echo -e   "   Webserver group......................: $HTTP_GROUP"
+echo ""
+echo -e   "   PHP version..........................: $PHP_VERSION"
+echo -e   "   PHP Engine...........................: $PHP_ENGINE"
+echo ""
+echo -e   "   Databse name.........................: $DATABASE_NAME"
+echo -e   "   Database type........................: $DATABASE_TYPE"
+echo ""
+if [[ "$DATABASE_TYPE" = "mysql" ]] ; then
+   echo -e   "   Mysql Credentials....................: $MYSQL_CREDENTIALS"
+fi
+echo ""
+
+echo ""
+echo -n "   Type upper case 'YES' to continue executing with this parameters: "
+read OK
+if [[ "$OK" = "YES" ]] ; then
+   echo ""
+   echo ""
+   echo -e "\033[1;32mGoing toeck for old files on \033[1;37m$WEBSITE \033[m"
+   echo ""
+else
+   fatal "Abort by user request - Answer as not 'YES'"
+fi
+
+
+echo ""
+
+
+# -----
+# - Main part of the script
+# -----
+
+echo ""
+echo ""
+echo -e "\033[37m\033[1mMain part of the script\033[m"
+echo ""
+
+
+# - Checking for old files
+# -
+echononl "   Check, if we can disable legacy encryption - Checking for old files.."
+
+su -c "/usr/local/php/bin/php ${WEB_BASE_DIR}/htdocs/occ encryption:scan:legacy-format" -s /bin/bash $HTTP_USER > $log_file 2>&1
+if [[ $? -eq 0 ]]; then
+   echo_ok
+   info "Output of command \033[37m\033[1mocc encryption:scan:legacy-format\033[m was:\n\n$(cat $log_file)"
+else
+   echo_failed
+   blank_line
+   echo ""
+   echo -e "\033[37m\033[1mcommandline was:\033[m"
+   echo "su -c \"/usr/local/php/bin/php ${WEB_BASE_DIR}/htdocs/occ encryption:scan:legacy-format\" -s /bin/bash $HTTP_USER"
+   error "Output of command \033[37m\033[1mocc encryption:scan:legacy-format\033[m was:\n\n$(cat $log_file)"
+fi
+
+blank_line
+
+clean_up 0