@echo off
setlocal enabledelayedexpansion
if not exist d:\123 md d:\123
pushd c:\123
for /f "tokens=*" %%i in ('dir/s/b') do (
if exist "d:\123\%%~nxi" (
for /f %%j in ('dir/b "d:\123\%%~ni*%%~xi"^|find /c /v ".*"') do set /a n=%%j + 1
copy "%%i" "d:\123\%%~ni!n!%%~xi") else copy "%%i" d:\123)
顶一楼，非常专业！
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