[文本处理] 求助批处理在文件前面加数字

@echo off
mode con lines=3000
set info=互助互利,支付宝扫码头像,感谢赞助
rem 有问题,可加QQ956535081及时沟通
title %info%
cd /d "%~dp0"
set n=100000
for /f "delims=" %%a in ('dir /a-d/b *.mpg') do (
    set /a n+=1
    set "file=%%a"
    set "name=%%~nxa"
    setlocal enabledelayedexpansion
    echo;"!file!" --^> "999999!n:~-4!-!name!"
    ren "!file!" "999999!n:~-4!-!name!"
    endlocal
)
echo;%info%
pause
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