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From: Barry Margolin <barmar@bbnplanet.com>
Subject: Re: GPL and "free" software
Date: 1999/05/03
Message-ID: <GqkX2.275$jw4.24179@burlma1-snr2>#1/1
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NNTP-Posting-Date: Mon, 03 May 1999 16:47:34 GMT
Newsgroups: comp.lang.ada,gnu.misc.discuss
Originator: barmar@bbnplanet.com (Barry Margolin)
Date: 1999-05-03T00:00:00+00:00
List-Id: <comp.lang.ada>

In article <slrn7ioisp.lmv.sholden@pgrad.cs.usyd.edu.au>,
Sam Holden <sholden@cs.usyd.edu.au> wrote:
>On 2 May 1999 12:40:52 GMT, Mitch Blevins <mblevin@debian.org> wrote:
>>Barry Margolin <barmar@bbnplanet.com> wrote:
>>> The GPL requires interactive programs to display a copyright notice when
>>> they start up, ...
>>
>>Is this really true?
>>I can swing a dead cat with a blindfold on (on me, not the cat) and hit
>>at least 50 interactive GPL'd programs that do NOT do this.
>
>No, it is suggested as part of the process of applying the terms of the
>GPL to your software.
>
>It is not part of the terms and conditions of the GPL.

Clause 2c contains the requirement.  However, it only applies to derived
works where the original program had such behavior.  In other words, you
can't take a GPLed program that displays a copyleft/warranty notice when it
starts up, modify it so it doesn't do so, and then redistribute this
version.

-- 
Barry Margolin, barmar@bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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