GPL2 licence bod 2 c)

Ahoj, poradí mi někdo s bodem 2 c) GPL licence:

2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)

Licence GPL2 zakazuje smazání copyrightu autora ve zdrojovém kódu, platí to samé pro výstup, např.:

php skript vypíše copyright autora v html - lze si pomocí GPLv2 zákaz smazání tohoto výstupu (nebo modifikování ho, aby nešel vidět) vynutit, jako to např. provádí autoři minibb: http://www.minibb.com/commercial_license.html ... rád bych vydal jeden program pod gpl ale takych bych byl rád, aby nemohl být smazán autorův copyright link v patičce

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