Set configuration file location

src/freedombone-utils-config

@@ -126,16 +126,21 @@ function write_config_param {
 
     if [ ${#param_name} -gt 0 ]; then
         if [ ${#param_value} -gt 0 ]; then
-            if [ $CONFIGURATION_FILE ]; then
-                if [ -f $CONFIGURATION_FILE ]; then
-                    if grep -q "${param_name}=" $CONFIGURATION_FILE; then
-                        sed -i "s|${param_name}=.*|${param_name}=${param_value}|g" $CONFIGURATION_FILE
-                    else
-                        echo "${param_name}=${param_value}" >> $CONFIGURATION_FILE
-                    fi
+            # set configuration file location if needed
+            test_config_file="$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" $CONFIGURATION_FILE
                 else
-                    echo "${param_name}=${param_value}" > $CONFIGURATION_FILE
+                    echo "${param_name}=${param_value}" >> $CONFIGURATION_FILE
                 fi
+            else
+                echo "${param_name}=${param_value}" > $CONFIGURATION_FILE
             fi
         fi
     fi