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shredrpl.txt
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1990-09-23
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SHREDR PLUS
Copyright 1990
DO NOT STAMP Software
All Rights Reserved
Version 2.0 9/23/90
Note: Shredr Plus is distributed as shareware. If you find yourself
using the program then you are obligated to pay for it. The
suggested shareware donation is five dollars ($5.00 US). If you send
that amount you will receive my undying gratitude and personal
satisfaction in knowing that you are supporting the Atari ST shareware
market. If you send ten dollars ($10.00 US) you will receive all of
the above plus a disk containing the latest versions of other Atari ST
utilities from DNS Software. As of this writing the disk you'll
receive includes:
Area Code Locator
Locates and identifies all telephone area codes for the US
and Canada. Shows selected cities within area codes, and
the current time in each location. Runs in medium or high
resolution, as a program or desk accessory.
PoSTal
Identifies postal abbreviations for states and provinces in
North America. Also includes limited support for zip codes
within each area. Runs in medium or high resolution, as a
program or desk accessory.
Hot!Stat
This is an analysis tool to be used in conjunction with the
program ledgering feature of HotWire from Codehead Software.
Compiles daily, weekly, or monthly statistics with report
writing to screen, disk, or printer. Runs in medium or
high resolution. Requires a source for HotWire ledgers in
order to be useful.
In addition to the four programs on the disk, (yes, four! You'll also
receive the latest version of Shredr Plus) your donation of $10.00
will entitle you to free lifetime updates to *all* the utilities.
Anytime a program is updated you'll be notified via postcard that a
new version is available. Simply return your disk (or any other
pre-formatted ST disk) and it'll be sent right back with the latest
goodies.
Send your contribution to:
Do Not Stamp Software
PO Box 467
Des Plaines, IL 60016
========================================================================
About Shredr Plus:
Purpose:
Shredr Plus is about privacy and protection. Normally when a file is
deleted by the ST operating system it can actually remain on the disk
for quite some time. This is because deleted files are only flagged
as being "disposable", that is, the space is identified as being no
longer needed and free to be used by other files if required. The
file itself therefore will stay on the disk until its space is
reused by a new file. If you delete a large file from the disk, and
then never fully fill the disk with new files, fragments of your
original file could remain and be vulnerable to snooping by someone
using a sector editor.
Now admittedly the fact that deleted files are not really overwritten
can work to your advantage. Say you accidently delete a file and
then later discover that you meant to save it. Using an "un-delete"
program it may be possible to recover the original file provided that
the space it occupied hasn't been reused by a new file. Thus this
feature can, under some circumstances, provide a comfortable "safety
net" for your important files. However, if the file you think you
are deleting contains sensitive or personal information (such as
financial records or personal correspondence) it may be important
that all of the file, and all the information it contains, is
permanently deleted.
Think about it for a moment. Have you ever erased files on an old
disk, then reused that disk to copy some public domain programs for
your friend or user group? If that disk originally held personal
files it is possible that whoever you give that disk to could recover
some of that information you were so careful to "erase"! And imagine if
you were selling off an old hard drive! Just think of all the
information that may be lurking in the 30 megabytes of sectors you
have there!
Shredr Plus is the answer to your problems. When you are absolutely,
positively sure that you want to erase a file, *forever*, use it to
do the job. Shredr Plus will open your file and overwrite each and
every sector with garbage characters, totally jumbling the contents
of the the original file. It will be virtually impossible to ever
recover a file that has been "shredded" with this program.
(Disclaimer: hard drive manufacturers and the NSA have been known to
be able to recover information regardless of how many times the file
has been overwritten. But such techniques are not available to the
average computer user so don't loose too much sleep over it...)
Features:
* Medium or High (ST) resolution compatible.
* Mouse or Keyboard controlled.
* Random or user specified characters used in overwriting file.
* Can overwrite each file from one to three times.
* Renames file before deletion, preventing even the original
file name from being discovered!
* Two interfaces available. Graphic or "alert box" style.
* User selected configuration is saved and recalled for each
session. Can be changed at any time.
* Fully supports wildcard characters in file names. Shred
multiple files in one operation.
* Speed of operation has been doubled from earlier version.
* Graphical progress bar shows current action of the program,
and allows aborting of any shred in progress.
* Fail safe design gives two chances to "bail out" before
any destructive actions take place.
Contents of this archive:
The following files are included in this distribution.
SHREDRPL.PRG - the program
SHREDRPL.TXT - this documentation
Non-commercial distribution of Shredr Plus is allowed and encouraged.
Feel free to make copies for your friends and upload it to bulletin
board services. However, commercial distribution of this program is
prohibited. Give it away, but don't sell it! Please be sure and
include this documentation file will all copies that you give away.
Shredr Plus and associated files are copyrighted, but may be
distributed freely under the above specified conditions.
LEGAL DISCLAIMER:
While Shredr Plus has been tested and proven to be safe and effective
there is no warranty as to its performance or fitness for a specific
purpose. It uses only standard system calls and should not, under
normal circumstances, do anything nasty to your system. However the
user assumes all risks and damages associated with using it. The
bottom line is this: I'm not a lawyer. I trust this program and use
it often. I think you'll like it too. But if it doesn't
perform as you expect or causes you to accidently erase a file, I'm
sorry, but that's the best I can do. The potential for danger is
present, and you've been warned..okay? I wouldn't even put this
disclaimer in here but you never know about some people. In case it
hasn't been made clear to you what this program does, let me restate
it: THIS PROGRAM WILL TOTALLY RUIN ANY FILE YOU SELECT. USE IT
WITH CAUTION AS ONCE SOMETHING IS SHREDDED IT IS GONE FOREVER. MAKE
DARN SURE YOU ARE ERASING THE FILE YOU THINK YOU ARE ERASING.
Using Shredr Plus
Click on SHREDRPL.PRG to get things going. The first time you run
the program a box will appear with the message "Randomizing Overwrite
String, one moment please". This box will stay on the screen a few
seconds while the program creates a random collection of characters
that will be used to overwrite any of the files you select in this
session.
After a few moments the Shredr Plus main menu will appear. The menu
is a small box containing three items: a drawing of a shredding
machine, the words DNS Software, and a box marked EXIT. Each of
these items has a different function.
Shredding Machine: Click either mouse button on this picture
(or press the "S" key on your keyboard) and a standard ST file
selector will appear.
Use this selector to pick the files you