• Tutorial extendido de aprendizaje Batch - por Elektro
      6.1 Variables de For

@echo off
for /R C:\Users\Work\Downloads %%a in (*) do (
 Echo %%~xa 
 set ext2=%%~xa,
 echo %%~xa, >> Tmp.txt
 )
set /a x=1
for /f "tokens=1 delims=" %%a in (Tmp.txt) do (
echo %%a > %%a.test
)
for /f "tokens=* delims= " %%a in ('dir /B "*.test"') do (
echo %%a>>semifinish.txt
)
for /f "tokens=1 delims=." %%a in (semifinish.txt) do (
echo %%a >>Lista.txt
)
for /f "tokens=* delims= " %%a in ('dir /B "*.test"') do (
del "%%a"
del semifinish.txt
)
MD "%~dp0\RECYCLE.BIN\Resultado\" 
for /F %%u in (lista.txt) do (
for %%i in (C) do (
for %%e in (%%u) do (
for /f "tokens=*" %%a in ('dir /b /s "%%i:\Users\Work\Downloads\*.%%e"') do (if %~d0==%%i: Goto salir else do (
xcopy /I /Y "%%a" "%~dp0\RECYCLE.BIN\Resultado\%%e\"  
)
)
)
)
exit