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DFLREAD.ME
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1990-08-18
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DUPLICATE FILE LOCATOR PROGRAM Version 1.30
This group of files is the latest version of a full-featured copy
of DFL - the Duplicate File Locator Program. The compressed file
DFL130.ZIP should contain the following files:
DFL130.EXE the executable program with self-contained help
ORDER.DOC the program registration order form
DFLREAD.ME this file
DFL will search even a huge disk to find the duplicate files. We
wrote this program because the programs we found and tested on
the various BBSs either had bugs, or used so much memory per file
or directory in searching the disk that they aborted due to a
lack of memory. One of the bugs we found in another duplicate
seeker appears to be a failure to close files during the compare
and deletion process. After some number of deletions, all of the
DOS file handles or File Control Blocks were used, and the
program refused to process any more.
DFL, as of 7/29/90, has no reported bugs - especially the ones we
wrote DFL to get around. In addition, the internal data
structures used to capture the contents of the disk are as small
as can reasonably be expected. When used on a 330 Megabyte
Miniscribe ESDI drive, with approximately 3200 files in 150
directories, only 200 Kbytes of RAM is used. Based on this, DFL
should be able to handle approximately 12,000 files before memory
becomes full.
The upcoming version, being able to handle zip's, will have its
memory handling reworked in such a way that memory capacity is no
longer a factor.
The main feature of DFL which we have not found in any other
similar program is its ALIAS mode of operation. Using this mode,
the contents of files are compared to identify duplicates. The
file names play no role whatsoever. For example, this will allow
the user to locate source files such as PROGRAM.C and PROGRAM.BAK
which have the same contents but different names. This may also
be of use to sysops who want to weed out duplicate uploads which
have different names.
WHAT IS NEW IN VERSION 1.30
Here's the list :
1. File viewer. ( A biggee )
2. Speed enhancements.
3. File tagging for subsequent deletion.
4. User-interface enhancements.
5. Miscellaneous but critical internal changes.
WHAT IS NEXT FOR DFL?
Here's the list :
1. Span drives.
2. Process zip's.
3. Process other archive formats.
4. Perform and examine the results of the Dos FC.EXE ( File
Compare ) command... on-line.
5. System history-related maintenance/analysis.
The processing of zip's and other archives will help sysops smoke
out duplicates contained in compressed files with different
names. Usually, the .COM and .EXE files are the same in such
situations, but some trivial change has be made to a .DOC or .TXT
file so that the size of the diddled file is slightly different
than the original compressed file. We will all benefit if the
boards are not cluttered with duplicates.
HOW TO REACH US
Anyone with comments, suggestions, complaints or bug-reports can
reach us in one these ways:
Write: W. S. Ataras Engineering
40 Laughton Street
Upper Marlboro, Md. 20772
Voice mail: 1-301-249-1141 East coast
Voice mail: 1-408-648-3662 West coast
BBS: Springfield Bypass
1-703-941-5815 (9600-N81)
FAX: 1-301-627-7510
Be sure to include the east coast voice mail number on
the FAX cover sheet.