datapatch

@echo off
set size=15360
set   afile="D:\test\Book1.xls"
set   bfile="D:\test\Book2.xls"
for /f "tokens=*" %%i in ('dir /s /a-d /b "D:\test\*.*"') do (
    if "%%i" == %afile% (
               if "%%~zi" == "%size%" (
           echo %%i [File_Size  %%~zi  B]
           del  %%i
                      del  %bfile%
               )
    )
 )
pause