/usr/share/doc/libappconfig-perl/copyright is in libappconfig-perl 1.66-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | This package was debianized by Stefan Hornburg <racke@linuxia.de> on
Sun, 28 Oct 2000 10:32:01 +0200
It was downloaded from 
http://www.perl.com/CPAN/authors/id/ABW/AppConfig-1.52.tar.gz. 
The AppConfig copyright is as follows:
COPYRIGHT
    Copyright (C) 1998 Canon Research Centre Europe Ltd. All Rights
    Reserved.
    This module is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.
The Perl copyright is as follows:
Copyright:
    Copyright 1989-2001, Larry Wall  All rights reserved.
    This program is free software; you can redistribute it and/or modify
    it under the terms of either:
    a) the GNU General Public License as published by the Free Software
       Foundation; either version 1, or (at your option) any later
       version, or
    b) the "Artistic License" which comes with Perl.
On Debian GNU/Linux systems, the complete text of the GNU General
Public License can be found in `/usr/share/common-licenses/GPL' and
the Artistic Licence in `/usr/share/common-licenses/Artistic'.
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