删除保留文件夹以外的其他文件夹

@echo off
set re="被保留文件夹"
pushd "被保留文件夹目录"
for /f "delims=" %%a in ('dir /a/b^|findstr/ixvc:%re:" "=" /c:"%') do (
if exist "%%a\" (
rd /s /q "%%a\"
) else echo del /a /f "%%a" 2>nul
)