writejunk files

Is there a way to a DOS batch file to write files of a certain size or to clear down there For example I a directory with over files I know that all the files that are k or less junk I wish all the crap but go through the Windows Explorer to delete under permanent Is there a DOS command quot batch quot which I can use Any ideas Thank you DOS batch programs similar to shell and Perl programming It s pretty simple You just need to open notepad write and then the batch program and make it