} else {
            filePrefix = "none";
            extention = "";
        }
        File inputFile = null;
        File outputFile = null;
        try {
            inputFile = File.createTempFile("cmdextin_" + filePrefix + "_", StringUtil.isNotBlank(extention) ? "." + extention : extention,
                    tempDir);
            String ext;
            if (outputExtension == null) {