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1992-11-25
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SDEL and UNSDEL for OS/2* v2.0
(C) Copyright 1992 by David B. Gillespie
All rights reserved.
SDEL (Safe-Delete)
version 1.0
What is SDEL?
You can use SDEL instead of the operating systems DEL or ERASE
command. SDEL moves or copies specified files to a directory
named SDELDIR on the drive you are logged onto instead of actually
deleting the file(s). It creates an index file that keeps track of
the files that are Safe-Deleted. The companion program UNSDEL allows
you to recover files from the SDELDIR directory.
SYNTAX: SDEL [drive:][filename]
[drive:][filename] specifies the directory and filenames to
Safe-Delete.
Examples:
If you are logged onto Drive D: and you enter the command
SDEL D:\tmp\*.exe
SDEL places all exe files in the D:\tmp directory in D:\SDELDIR.
(If you were logged on C:, they would be placed in C:\SDELDIR.)
SDEL C:\test - Safe-Deletes ALL files in the C:\test directory.
Drawbacks:
You must use SDEL instead of DEL or ERASE. If you Safe-Delete files
with SDEL you do not regain disk space as you would using DEL or
ERASE. When you feel comfortable that you do NOT need the files in
the SDELDIR directory, you can use DEL to get rid of them. I plan to
add a compression routine to SDEL if I find there is enough interest
in these programs. Of course, UNSDEL would contain a decompression
routine. Read the LICENSE information below for information on two
PM programs you will receive if you register these two utilities.
You can modify CMD.EXE so that SDEL can be renamed to DEL. Make a
backup copy of CMD.EXE and then copy CMD.EXE to CMD.E. Then enter
the following commands after opening a DOS window:
1) Debug CMD.E
2) S 100 l8000 "DEL" <enter>
This will return a value in the form of ssss:xxxx, where xxxx
is the number to use in the next step.
3) E xxxx ff,ff,ff <enter>
4) W <enter>
5) Q <enter>
To copy CMD.E to CMD.EXE, you must then boot OS/2 from a floppy. After
copying CMD.E to CMD.EXE, enter Ren SDEL.EXE DEL.EXE.
* OS/2 is a registered trademark of IBM Corp.
UNSDEL
version 1.0
What is UNSDEL?
UNSDEL is the program you use to read the SDELDIR.NDX file. Then it
presents you with a list of files to choose from that you can recover.
It will prompt you for a directory to place the files that you mark
for recovery. Pressing Enter alone will cause files to be placed in
the current directory. UNSDEL looks for the SDELDIR directory on the
drive you are logged onto. UNSDEL is more flexible to use than the
UNDELETE program that comes with OS/2. It presents you with a complete
list of deleted files.
Using UNSDEL:
Move through the list of files using HOME, END, PAGEUP, PAGEDOWN, up
arrow, down arrow or spacebar. The spacebar has the same function
as the down arrow. It moves the scroll bar down. To mark a file
that you want to restore, hilight it with the scroll bar and press
the plus key. If you change your mind, press the minus key to
deselect it. Once you have marked all the files you want to recover
press F2. Press ESC to exit the program.
You will be asked to choose whether or not to overwrite a file if a
file exists in the directory you chose to restore to has the same
name as a file you chose to restore.
DISCLAIMER
The author hereby disclaims all warranties relating to
this software, whether express or implied, including without
limitation any implied warranties of merchantability or fitness
for a particular purpose. The author will not be liable for any
special, incidental, consequential, indirect or similar damages
due to loss of data or any other reason, even if the author
has been advised of the possibility of such damages. In no
event shall the author's liability for any damages ever exceed
the price paid for the license to use software, regardless of the
form of the claim. The person using the software bears all risk
as to the quality and performance of the software.
LICENSE
SDEL and UNSDEL are NOT public domain or free software, but
are being distributed as "shareware".
Non-registered users of this software are granted a limited
license to make an evaluation copy for trial use on a private,
non-commercial basis, for the express purpose of determining
whether these programs are suitable for their needs. At the
end of this trial period (thirty days), you should either
register your copies or discontinue using them.
Registration entitles you to support and notification of
updates to the software. After registering, you will receive
two Presentation Manager programs. One is a PM version of
UNSDEL, which has more functions and is more flexable than
the character based version. The other PM program can be
used in place of OS/2's UNDELETE. It is much easier to use
than UNDELETE. Both PM programs you will receive if you
register are NOT to be uploaded to bulletin board systems
or given to anyone else.
You are allowed to distribute SDEL and UNSDEL to bulletin board
systems provided that all files listed below are included with
them and are not modified in any way.
INSTITUTIONAL/COMMERCIAL SITE LICENSE
Any corporation, institution, government agency or business
wishing to use the this software in the course of its internal
business must purchase a SITE LICENSE. Any individual wishing
to use this software in a corporation, institution, government
agency or business must purchase a SITE LICENSE. Please see the
ORDER.DOC or write for terms.
Files you should have received in this archive:
SDEL.EXE - safe deletes files
UNSDEL.EXE - recovers files deleted by SDEL
MANUAL.DOC - this document
ORDER.DOC - order form
Files you will receive after registering SDEL and UNSDEL:
UNSDELPM.EXE - can be used instead of UNSDEL.EXE
UNDELPM.EXE - can be used instead of UNDELETE.EXE
David B. Gillespie
Rt. 1 Box 338-H
Byhalia, MS 38611