@echo off
set /p filename=请输入要替换的后缀名:
echo.
set /p filename2=请输入替换后的后缀名:
echo.
setlocal ENABLEDELAYEDEXPANSION
for /f "tokens=*" %%i in ('dir /b *.%filename%') do (
for /f "tokens=1 delims=." %%j in ("%%i") do ren "%%i" "%%j.%filename2%"
)
echo 替换成功!按任意键推出
pause