Tidying

src/freedombone-utils-config

     param_name="$1"
     param_value="$2"
 
+    if [ ! $CONFIGURATION_FILE ]; then
+        CONFIGURATION_FILE=$HOME/${PROJECT_NAME}.cfg
+    fi
+
     if [ ${#param_name} -gt 0 ]; then
         if [ ${#param_value} -gt 0 ]; then
-            # set configuration file location if needed
-            test_config_file="$CONFIGURATION_FILE"
-            if [ ${#test_config_file} -eq 0 ]; then
-                $CONFIGURATION_FILE=$HOME/${PROJECT_NAME}.cfg
-            fi
-
-            # update the configuration file
             if [ -f $CONFIGURATION_FILE ]; then
                 if grep -q "${param_name}=" $CONFIGURATION_FILE; then
                     sed -i "s|${param_name}=.*|${param_name}=${param_value}|g" $CONFIGURATION_FILE
 }
 
 function save_configuration_values {
-    if [ ! $CONFIGURATION_FILE ]; then
-        CONFIGURATION_FILE=$HOME/${PROJECT_NAME}.cfg
-    fi
-
     for v in "${configuration_variables[@]}"
     do
         write_config_param "$v" "${!v}"

src/freedombone-utils-setup

 DEFAULT_DOMAIN_NAME=
 DEFAULT_DOMAIN_CODE=
 MY_USERNAME=
-SYSTEM_TYPE="full"
+if [ ! $SYSTEM_TYPE ]; then
+    SYSTEM_TYPE="full"
+fi
 
 # An optional configuration file which overrides some of these variables
-CONFIGURATION_FILE="$HOME/${PROJECT_NAME}.cfg"
+if [ ! $CONFIGURATION_FILE ]; then
+    CONFIGURATION_FILE="$HOME/${PROJECT_NAME}.cfg"
+fi
 
 # Directory where source code is downloaded and compiled
 INSTALL_DIR=$HOME/build