yangfengoo

@echo off
for /f "tokens=*" %%a in ('dir /s/b/a-d "..\a\"') do (
if exist "%cd%\x\%%~nxa" (move /y "%cd%\x\%%~nxa" "%cd%\backup\%%~nxa")
copy "%%~a" "%cd%\x\%%~nxa"
)
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yangfengoo

@echo off
for /f "tokens=*" %%a in ('dir /s/b/a-d a\') do (
if exist "x\%%~nxa" (move /y "x\%%~nxa" "backup\%%~nxa")
copy "%%~a" "x\%%~nxa"
)
pause
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已修正