@echo off & title 文件重命名为序号
set Ext=*.jpg,*.pdf
for /r /d %%a in (*) do (
    pushd "%%~a"
    call set Num=1000
    for /f "delims=" %%i in ('dir /a-d/b %Ext%') do (
        call set /a Num+=1
        call ren "%%~i" "%%Num:~1%%%%~xi"
    )
    popd
)
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@echo off
setlocal enabledelayedexpansion
cd /d "%~dp0"
for /r /d %%a in (*) do (
    pushd "%%~a"
    for /f "delims=" %%i in ('dir /b /a-d *.pdf *.jpg') do (
        for /f "tokens=1* delims=、" %%j in ("000%%i") do (
        set "NewName=%%j"
        set "NewName=!NewName:~-4!%%~xi"
            ren "%%i" "!NewName!"
        )
    )
    popd
)
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