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Article View: comp.os.msdos.programmer
Article #1033

Re: alt 255

#1033
From: Denis Beauregard
Date: Fri, 28 Aug 1992 18:32
34 lines
2307 bytes
In article <exuptr.390.714845407@exu.ericsson.se> exuptr@exu.ericsson.se (exuptr@exu.ericsson.se) writes:
>In article <92238.135238MCHAMINA@ESTEC.BITNET> MCHAMINA@ESTEC.BITNET (CHAMINADE, MARC MICHEL LOUIS) writes:
>
>>If you want to prevent people to delete your files on your hd with the function
>>del xxx.x rather than Attrib you'd better rename the files from
>>xxx.x to
>> xxx.x The space in front of the name is obtained with the alt-255 combination.
>>You can not call the file or do anything to it by using the space key.
>
>>Some may find it usefull. I do !
>
>From a program, you can actually put a space (ASCII 32) in the filename.  
>This will prevent some hacker from using the alt-255 trick to delete your 
>file.  Of course, if you create a file ' abc.xyz', it can be gotten rid of
>with the command 'del *.xyz'.
>
>  - Patrick Taylor
>    exuptr@exu.ericsson.se                       "Don't let the .se fool you"
>    alternately, exuptr@ZGNews.Lonestar.Org

One amazing thing I saw was someone who put a file named *.* in a PC!
The trouble is that the PC was in a remote location (50 miles from the
nearest town), most persons working in that place having a limited
knowledge of PC.  We presumed at that time some visitor, in prevision
of loosing a maintenance contract, decided to write some *.* files.
A user not very familiar with PC could try to erase those annoying files ...
and the other files as well :-(   We were lucky to discover this before
damage :-) , but unable to find who make that.  

-- 
  \_\    Denis Beauregard  *  internet:beaurega@ireq.hydro.qc.ca
 /   \   Genealogiste officiel : Beauregard/Jarret/Jarest/Vincent
J   __>  Vient de paraitre : Andre Jarret et ses Ancetres
\_.-===  En vente par l'auteur                      Opinions ? Et pis non !
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Message-ID: <BtpI5v.3CJ@ireq.hydro.qc.ca>
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!bonnie.concordia.ca!hobbit.ireq.hydro.qc.ca!beaurega
References: <92238.135238MCHAMINA@ESTEC.BITNET> <exuptr.390.714845407@exu.ericsson.se>

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Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!bonnie.concordia.ca!hobbit.ireq.hydro.qc.ca!beaurega
From: beaurega@ireq.hydro.qc.ca (Denis Beauregard)
Newsgroups: comp.os.msdos.programmer
Subject: Re: alt 255
Message-ID: <BtpI5v.3CJ@ireq.hydro.qc.ca>
Date: 28 Aug 92 18:32:19 GMT
References: <92238.135238MCHAMINA@ESTEC.BITNET> <exuptr.390.714845407@exu.ericsson.se>
Sender: news@ireq.hydro.qc.ca (Netnews Admin)
Organization: Institut de recherche d'Hydro-Quebec, Varennes, Canada
Lines: 34