[megaloman]

Код:

@Echo Off
cls
>nul Chcp 1251
	Set "BoxIn=Z:\Box_In"
	Set "Mask=bin*.bin"

	Set "FileOut=Z:\Box_Out\! merged.bin"

	If Not Exist "%BoxIn%\%Mask%" (Echo Files "%BoxIn%\%Mask%" not found &Pause &Exit /B)

	FOR /F "usebackq delims=" %%f In (`2^>nul Where "%BoxIn%:%Mask%"`) DO >nul Copy /b "%%f" "%FileOut%" &GoTo :Begin
	:Begin
	FOR /F "usebackq Skip=1 delims=" %%f In (`2^>nul Where "%BoxIn%:%Mask%"`) DO (
		(>>"%FileOut%" Echo.)		
		(>>"%FileOut%" Echo.)		
		>nul Copy /b "%FileOut%"+"%%f" "%FileOut%"
	)
Pause
Exit /B