[greg zakharov]

Код:

@echo off
  setlocal&chcp 1251>nul
    for /f %%i in ('dir /ad /s /b') do (
      for /f "tokens=3" %%j in (
        'robocopy "%%~i" "%tmp%" /l /bytes^
        /nfl /ndl /xj /njh ^| find /i "байт"'
      ) do if %%j lss 1024 rd /q /s "%%~i"
    )
  endlocal&chcp 866>nul
exit /b