编写一段bat处理脚本用于把Windows某个目录下的所有文件名修改为小写

@echo off setlocal enabledelayedexpansion

set "directory=%1"

if not exist "%directory%" ( echo Directory does not exist. exit /b 1 )

for %%f in ("%directory%*") do ( set "filename=%%~nxf" set "filename=!filename:~0,-3!!filename:~-3!" ren "%%f" "!filename:l= L!" )

echo Done.