zaqmlp

@echo off
:main
cls
echo;1 添加
echo;2 还原 
set "c="
set /p c=输入序号并按回车:
if "%c%" equ "1" goto 1
if "%c%" equ "2" goto 2
goto main
:1
for /f "delims=" %%a in ('dir /a-d/b/s') do (
    if "%%~nxa" neq "%~nx0" (ren "%%a" "%%~nxa.suv")
)
goto end
:2
for /f "delims=" %%a in ('dir /a-d/b/s *.suv') do ren "%%a" "%%~na"
:end
pause
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