Message-ID: <4AC35456.20505@byu.net>
Date: Wed, 30 Sep 2009 06:51:34 -0600
From: Eric Blake <ebb9@byu.net>
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To: cygwin@cygwin.com, ehud@unix.mvs.co.il
Subject: Re: Tree command - Display Structure of Directory Hierarchy
References: <64de84830909280903j1ca08070t493873286366f754@mail.gmail.com>  	<4AC0E0F2.7000305@cygwin.com> <64de84830909281055t90a13acub59479b24cb7fa1f@mail.gmail.com>  	<4AC0FEA2.8000204@cwilson.fastmail.fm> <64de84830909290444m60539a17paafd88beeb98183@mail.gmail.com> <8d7f7110909290552w728d9276x4935de8fd4f9f694@mail.gmail.com> <4AC23C2D.9080402@gmail.com> <4AC24B3F.9050406@cwilson.fastmail.fm> <4AC27372.8060503@gmail.com> <200909301222.n8UCMM9k022483@beta.mvs.co.il> <4AC35698.3030701@gmail.com>
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According to Dave Korn on 9/30/2009 7:01 AM:
> Ehud Karni wrote:
>> On Tue, 29 Sep 2009 21:52:02 Dave Korn wrote:
>>>   That is precisely why I asked for the source, and precisely the advantage of
>>> open source over proprietary closed sources :-)
>> I attach a source code for my own (simplified version) treed program
> 
>   Thanks for trying to help, but I'm afraid you just aren't able to fulfull
> someone else's GPL obligations on their behalf; I want the actual source from
> which the actual binary that was distributed to me was compiled.

I agree with Dave's concerns.  Furthermore:

>> This program is released under the GPL, so you can do any modification
>> to it. If you do, please post your changes (and the reason behind it).

One of the freedoms guaranteed by the GPL is that you are free to make
modifications without any requirement to push them back 'upstream'.  In
other words, mandating that users return enhancements to you violates the
very premise that you gave them by releasing under the GPL (of course,
most users will be civil enough to return enhancements as a favor, but it
is because they choose to, and not because you required it).

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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