This file is indexed.

/usr/share/doc/nethogs/copyright is in nethogs 0.8.0-1.

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The actual contents of the file can be viewed below.

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This package was debianized by Bart Martens <bartm@knars.be> on
Sat, 29 Apr 2006 17:42:35 +0200.

It was downloaded from http://nethogs.sourceforge.net/

Copyright 2004-2005, 2008, 2010-2011 Arnout Engelen <arnouten@bzzt.net>

License:

   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 for more details.

   You should have received a copy of the GNU General Public License
   along with this package; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

On Debian systems, the complete text of the GNU General
Public License can be found in `/usr/share/common-licenses/GPL-2'.

The Debian packaging is
Copyright (c) 2006-2009 Bart Martens <bartm@knars.be>
and is licensed under the GPL version 2, see above.

The file nethogs.8 contains this:
  .\" This page Copyright (C) 2004 Fabian Frederick <fabian.frederick@gmx.fr>
  .\" Content based on Nethogs homepage by Arnout Engelen
and is assumed to be licensed under the same license as nethogs, so GPL version 2.