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NOVIRUS.DOC
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1988-01-24
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NOVIRUS.EXE
(C) 1988 Yan Seiner
223-C King St., Princeton, NJ 08540
This program is distributed with source, written in Turbo C. It may not be
distributed without the source or this documentation. If you find it of
use, a contribution of $10 would be greatly appreciated. It may not be
used as part of a commercial product without the written permission of
the author.
Please send any bug reports to the above address. With your help, we can
stop viruses from spreading.
NOVIRUS will scan a command processor and correct it from a known good copy
if necessary.
syntax:
novirus [drive:] [path] com1 [drive:] [path] com2
where com1 is your current command processor (usually command.com) and com2
is a known good copy of it, say in c:\system\dos\command.com. I suggest
you put this into your autoexec.bat file, and have it check your command
processor every time you boot.
As a precaution, I suggest changing the name of command.com to something
different (see your DOS manual and the SHELL command for config.sys on how
to do this.)
NOVIRUS will only work if you are comparing command processors from the
same version of DOS. If two disks are used, both must have been formatted
with the same version.
Lastly, I cannot take responsibility if a virus or trojan horse trashes
your hard disk. Backup early and often. NOVIRUS uses DOS interrupts, so
any virus monitoring these may be able to circumvent it.