cfwyy77_bat

@echo off
setlocal enabledelayedexpansion

for /f %%a in ('dir /b D:\数据1\*.txt') do (
    set nu=1000001
    (for /f %%i in (D:\数据1\%%a) do (
    set str=%%i
    echo !nu! !str:~0,2!
    set /a nu+=1
    echo !nu! !str:~2,4!
    set /a nu+=1
    ))>D:\数据2\%%a
    )
pause
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