}

	// Backup any already existing output file
	_, err := os.Stat(outputFileName)
	if err == nil {
		err := os.Rename(outputFileName, outputFileName+"."+time.Now().Format("20060102150405"))
		if err != nil {
			fatalErr(err)
		}
	}

	// Open the input and create the output file
	input, err := os.Open(inputFileName)
	fatalErr(err)
	defer input.Close()