.forEach(k -> addSystemProperty(cmdList, k.toString(), null, null));
    }

    protected void addFessSystemProperties(final List<String> cmdList) {
        System.getProperties().keySet().stream().filter(k -> k != null && k.toString().startsWith(Constants.SYSTEM_PROP_PREFIX))
                .forEach(k -> addSystemProperty(cmdList, k.toString(), null, null));
    }

        }
        cmdList.add("-Dfess.log.path=" + logFilePath);
        addSystemProperty(cmdList, Constants.FESS_VAR_PATH, null, null);
        addSystemProperty(cmdList, Constants.FESS_THUMBNAIL_PATH, null, null);
        addSystemProperty(cmdList, "fess.log.name", getLogName("fess"), getLogName(StringUtil.EMPTY));
        if (logLevel != null) {