帮我写个bat文件 用来实现文件名按数字递增例如001 002 003 。。。。

@echo off
setlocal enabledelayedexpansion

set /a count=1

for %%f in (*.*) do (
set "filename=%%~nf"
set "ext=%%~xf"
set "newname=00!count!"
set "newname=!newname:~-3!"
ren "%%f" "!newname!.!ext!"
set /a count+=1
)

echo "Done!"