$file_size_deleted = 1024 # del file which is less than 1024 bytes 

  function processing_grep(  $file ){  
          #write-host "** = " $file 
          $fsize= (Get-Item $file).Length
          if($fsize*1 -le $file_size_deleted) {
  　　　　   write-host "  file_size_deleted  : "  $fsize  -ForegroundColor green
             del $file
           }
 
  }
 
  ,@( Get-ChildItem -Path $Path  | ?{$_.psiscontainer -eq $false} |  %{processing_grep ($_.FullName )} )
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