diff --git a/read_config b/read_config
index f0fbaaa..4844158 100755
--- a/read_config
+++ b/read_config
@@ -6,58 +6,88 @@ source ./log_helpers
 if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     readonly read_config_sourced=${BASH_SOURCE[0]}
 
+    readonly DATEFLAGS="+%Y.%m.%dT%H.%M.%S"
+    readonly STRIPCOMMENTS='sed -e s/#.*$//'
+    readonly INDENT="awk '{ print \"\t\t\t\" \$0 }'"
+    readonly JOINLINES="tr '\n' '\040'"
+
+    readonly UPDATEPSAHOME=$HOME/.updatepsa
+
+    readonly UPDATEPSABEGIN=./.updatepsa/begin
+    readonly UPDATEPSAEND=./.updatepsa/end
+
+    readonly PROGRAM=`basename $0`
+    readonly VERSION="0.8.0"
+
+    readonly WORKSPACE_DIR=workspace
+
+    ${WORKING_DIRECTORY:=$UPDATEPSAHOME}
+    ${CONFIGFILENAME:=update_psa.conf}
+
+    if ! [ -f "$CONFIGFILENAME" ]; then
+        log_fatal "$func:${LINENO}: $CONFIGFILENAME not found"
+    fi
+
+    if [ -z "$WORKING_DIRECTORY" ]; then 
+        log_fatal "$func:${LINENO}: WORKING_DIRECTORY not set in $cf"
+    fi
+    
+    EXITCODE=0
+    CLONE_CUSTOMER_REPOSITORY=false
+
     # read config file (JSON syntax)
     #
     read_config() {
         local func="${FUNCNAME[0]}"
+    
+        log_debug "$func:${LINENO}: CONFIGFILENAME=$CONFIGFILENAME"
+        log_debug "$func:${LINENO}: WORKING_DIRECTORY=$WORKING_DIRECTORY"
         
-        readonly GIT_SSL_NO_VERIFY="$(cat "$1" | jq -r .GIT_SSL_NO_VERIFY)"
+        local readonly cf="$CONFIGFILENAME"
+
+        if cd $WORKING_DIRECTORY ; then
+            log_debug "$func:${LINENO}: cd to $WORKING_DIRECTORY"
+        else
+            log_fatal "$func:${LINENO}: cannot cd to $WORKING_DIRECTORY"
+        fi
+        
+        readonly GIT_SSL_NO_VERIFY="$(cat "$cf" | jq -r .GIT_SSL_NO_VERIFY)"
         if [ -z "$GIT_SSL_NO_VERIFY" ]; then 
-            log_fatal "$func:${LINENO} GIT_SSL_NO_VERIFY not set in $1"
+            log_fatal "$func:${LINENO} GIT_SSL_NO_VERIFY not set in $cf"
         fi
         log_debug "$func:${LINENO}: GIT_SSL_NO_VERIFY=$GIT_SSL_NO_VERIFY"
+        log_debug "$func:${LINENO}: WORKSPACE_DIR=$WORKSPACE_DIR"
         
-        readonly working_directory="$(cat "$1" | jq -r .working_directory)"
-        if [ -z "$working_directory" ]; then 
-            log_fatal "$func:${LINENO}: working_directory not set in $1"
+        readonly CUSTOMER_LOCATION=$(cat "$cf" | jq -r .customer_location)
+        if [ -z "$CUSTOMER_LOCATION" ]; then 
+            log_fatal "$func:${LINENO}: CUSTOMER_LOCATION not set in $cf"
         fi
-        log_debug "$func:${LINENO}: working_directory=$working_directory"
-        
-        readonly workspace_dir="$(cat "$1" | jq -r .workspace_dir)"
-        if [ -z "$workspace_dir" ]; then 
-            log_fatal "$func:${LINENO}: workspace_dir not set in $1"
-        fi
-        log_debug "$func:${LINENO}: workspace_dir=$workspace_dir"
-        
-        readonly customer_location=$(cat "$1" | jq -r .customer_location)
-        if [ -z "$customer_location" ]; then 
-            log_fatal "$func:${LINENO}: customer_location not set in $1"
-        fi
-        log_debug "$func:${LINENO}: customer-location=$customer_location"
+        log_debug "$func:${LINENO}: customer-location=$CUSTOMER_LOCATION"
 
-        readonly customer_id="customer_$(cat "$1" | jq -r .customer_id)"
-        if [ -z "$customer_id" ]; then 
-            log_fatal "$func:${LINENO} customer_id not set in $1"
+        readonly CUST_ID="$(cat "$cf" | jq -r .customer_id)"
+        if [ -z "$CUST_ID" ]; then 
+            log_fatal "$func:${LINENO} CUST_ID not set in $cf"
         fi
-        log_debug "$func:${LINENO}: customer-id=$customer_id"
+        readonly CUSTOMER_ID="customer_$CUST_ID"
+        log_debug "$func:${LINENO}: CUSTOMER-ID=$CUSTOMER_ID"
         
-        local __r_path="$(cat "$1" | jq -r .cust_repository_path)"
+        local __r_path="$(cat "$cf" | jq -r .cust_repository_path)"
         if [ -z "$__r_path" ]; then 
-            log_fatal "$func:${LINENO}: customer repository path not set in $1"
+            log_fatal "$func:${LINENO}: customer repository path not set in $cf"
         fi
-        readonly customer_repository_path="${__r_path}/${customer_id}.git"
-        log_debug "$func:${LINENO}: customer r-path=$customer_repository_path"
+        readonly CUSTOMER_REPOSITORY_PATH="${__r_path}/${CUSTOMER_ID}.git"
+        log_debug "$func:${LINENO}: customer r-path=$CUSTOMER_REPOSITORY_PATH"
 
-        readonly number_of_zone_groups="$(cat "$1" | jq -r .zone_group[0])"
+        readonly number_of_zone_groups="$(cat "$cf" | jq -r .zone_group[0])"
         log_debug "$func:${LINENO}: $number_of_zone_groups zone_group(s)"
 
         local __zone_groups=(0)
         for zg in `seq 1 $number_of_zone_groups`; do
-            local __n_zones="$(cat "$1" | jq -r .zone_group[$zg].zone[0])"
+            local __n_zones="$(cat "$cf" | jq -r .zone_group[$zg].zone[0])"
             __zone_groups[$zg]=$__n_zones
         done
 
-        log_debug "$func:${LINENO}: reading ${1} done"
+        log_debug "$func:${LINENO}: reading ${wd} done"
         
         return 0
     }
@@ -67,24 +97,24 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     check_sanity_of_repository () {
         local func="${FUNCNAME[0]}"
 
-        local __customer_base_dir="$working_directory/${workspace_dir}"
-        __customer_base_dir="${__customer_base_dir}/${customer_id}"
+        local __customer_base_dir="$WORKING_DIRECTORY/${WORKSPACE_DIR}"
+        __customer_base_dir="${__customer_base_dir}/${CUSTOMER_ID}"
 
-        readonly customer_id_base_dir=${__customer_base_dir}
-        log_debug "$func:${LINENO}: customer_id_base_dir="
-        log_debug "$func:${LINENO}:      $customer_id_base_dir"
+        readonly CUSTOMER_ID_BASE_DIR=${__customer_base_dir}
+        log_debug "$func:${LINENO}: CUSTOMER_ID_BASE_DIR="
+        log_debug "$func:${LINENO}:      $CUSTOMER_ID_BASE_DIR"
 
-        __customer_base_dir="${__customer_base_dir}/${customer_location}"
+        __customer_base_dir="${__customer_base_dir}/${CUSTOMER_LOCATION}"
 
-        readonly customer_location_dir="$__customer_base_dir"
-        log_debug "$func:${LINENO}: customer_location_dir="
-        log_debug "$func:${LINENO}:      $customer_location_dir"
+        readonly CUSTOMER_LOCATION_DIR="$__customer_base_dir"
+        log_debug "$func:${LINENO}: CUSTOMER_LOCATION_DIR="
+        log_debug "$func:${LINENO}:      $CUSTOMER_LOCATION_DIR"
 
-        readonly update_conf="${customer_location_dir}/update.conf"
-        log_debug "$func:${LINENO}: update.conf="
-        log_debug "$func:${LINENO}:      $update_conf"
+        readonly UPDATE_CONF="${CUSTOMER_LOCATION_DIR}/update.conf"
+        log_debug "$func:${LINENO}: UPDATE.CONF="
+        log_debug "$func:${LINENO}:      $UPDATE_CONF"
         
-        readonly current_conf="${customer_location_dir}/current.conf"
+        readonly current_conf="${CUSTOMER_LOCATION_DIR}/current.conf"
         log_debug "$func:${LINENO}: current.conf="
         log_debug "$func:${LINENO}:      $current_conf"
 
@@ -224,24 +254,30 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         else
             log_fatal "$func:${LINENO}: $opkg_cmds_file does not exist"
         fi
-        
-        readonly known_files=(${customer_location}/update.conf \
-                              ${customer_location}/current.conf \
-                              ${device_conf##*${customer_id}/} \
-                              ${emp_conf##*${customer_id}/} \
-                              ${printer_conf##*${customer_id}/} \
-                              ${opkg_cmds_file##*${customer_id}/} \
-                              ${atbqt_ini##*${customer_id}/} \
-                              ${ismasmgr_ismasmgr_ini##*${customer_id}/} \
-                              ${sysconfig_ismasmgr_ini##*${customer_id}/} \
-                              ${sysconfig_sysconfig_ini##*${customer_id}/} \
-                              ${sysconfig_sysctrl_ini##*${customer_id}/})
 
-        log_debug "$func:${LINENO}: conf/ini_files=$(echo ${known_files[@]})"
-        log_debug "$func:${LINENO}: sanity of ${customer_repository_path} OK"
+        readonly KNOWN_CONF_FILES=(${CUSTOMER_LOCATION}/update.conf  \
+                                   ${CUSTOMER_LOCATION}/current.conf \
+                                   ${device_conf##*${CUSTOMER_ID}/}  \
+                                   ${emp_conf##*${CUSTOMER_ID}/}     \
+                                   ${printer_conf##*${CUSTOMER_ID}/})
+
+        readonly KNOWN_INI_FILES=(${atbqt_ini##*${CUSTOMER_ID}/}              \
+                                  ${ismasmgr_ismasmgr_ini##*${CUSTOMER_ID}/}  \
+                                  ${sysconfig_ismasmgr_ini##*${CUSTOMER_ID}/} \
+                                  ${sysconfig_sysconfig_ini##*${CUSTOMER_ID}/}\
+                                  ${sysconfig_sysctrl_ini##*${CUSTOMER_ID}/})
+        
+        readonly KNOWN_FILES=(${KNOWN_CONF_FILES[@]} \
+                              ${KNOWN_INI_FILES[@]}  \
+                              ${opkg_cmds_file##*${CUSTOMER_ID}/})
+
+        log_debug "$func:${LINENO}: known conf/ini_files ->"
+        for (( i=0; i < ${#KNOWN_FILES[@]}; ++i )); do
+            log_debug "$func:${LINENO}: \t\t ${KNOWN_FILES[$i]}"
+        done
+        log_debug "$func:${LINENO}: sanity of ${CUSTOMER_REPOSITORY_PATH} OK"
 
         return 0
     }
-    # read_config UpdateController.conf
 fi