..\A\
a.json
b.json
c.json
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..\B\
a.png
c.png
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@echo off
set keeplist=
for /f "delims=. tokens=1" %%a in (A\) do for /f "delims=. tokens=1" %%b in (B\) do if "%%a"=="%%b" set KeepList=%keeplist%,%%b.json
@REM for /f %%i in (a\) do for /f "delims=," %%o in ("%keeplist%") do if "%%i"=="%%o" copy "A\%%o" "C\"
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@echo off&setlocal enabledelayedexpansion
md C
for %%i in (B\*.png) do if exist "A\%%~ni.json" copy "A\%%~ni.json" "C\"
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@echo off
cd /d %~dp0
if not exist C md C
for /f "delims=" %%a in ('dir /b b\*.png') do set %%~na=1
for /f "delims=" %%a in ('dir /b/s a\*.json') do (
if defined %%~na (echo;move "%%~fa" C\%%~nxa) else (echo;del %%~fa)
)
pause
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