[Foreigner]

sdksdk, Исходя из конкретного примера:

Код:

@echo off
setlocal
1>nul chcp 1251

2>nul (

	for /f "tokens=1,2 delims=<>" %%i in (2013.txt) do (

		if not defined _%%i ( set _%%i=%%j ) else ( set _%%i1=%%j )
	
))

1>2013_1.txt (

	echo %_date% %_name% %_message%
	echo %_date1% %_name1% %_message1%	

)

1>nul chcp 866