TRUNCATE, a freeware file truncation utility.  

Warning: TRUNCATE cannot truncate files that are larger than 32 Mbytes.           

Syntax:  

TRUNCATE [drive:\path\file_name] nnnn

where:

[drive:\path\file_name] 

        = The File Name of what you want to truncate.  If it located
          in another directory, you must specify the correct drive
          and directory (i.e. C:\TMP\TOOBIG.DAT)
            
nnnn    = size in Kbytes to truncate _to_
          (i.e. if you want to truncate TOOBIG.DAT to a file size
           of 20 Kbytes, use the value 20)
           

Note: No backups of the original file are created. If you want to
      go back to the original, you should back it up before running
      TRUNCATE.
           
