/usr/share/doc/gtkatlantic/copyright is in gtkatlantic 0.6.1-2.
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  | Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: GtkAtlantic
Source: http://gtkatlantic.gradator.net/
Files: *
Copyright: 2002,      Xavier Amado <xavier@blackbloodstudios.com>
           2002,      Jorge RodrÃguez <jorginius@gmail.com>
           2002-2015, Sylvain Rochet <gradator@gradator.net>
License: GPL-2+
Files: debian/*
Copyright: 2003-2004, Julien Delange <julien@gunnm.org>
           2006,      Marc 'HE' Brockschmidt <he@debian.org>
           2007,      Bart Martens <bartm@knars.be>
           2009,      Barry deFreese <bdefreese@debian.org>
           2013-2017, Markus Koschany <apo@debian.org>
License: GPL-2+
License: GPL-2+
 This package is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 .
 This package is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License 2 for more details.
 .
 On Debian systems, the complete text of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.
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