}
			out := fmt.Sprintf("%s-%s.%05d", key, baseName, part)
			if len(files) == 1 {
				out = fmt.Sprintf("%s-%s", key, baseName)
			}
			if missingAll > 0 {
				out += ".incomplete"
				fmt.Println(missingAll, "bytes missing.")
			} else {
				if wantMD5 != "" {
					sum := md5.Sum(combined)
					gotMD5 := hex.EncodeToString(sum[:])
					if gotMD5 != wantMD5 {