This file is indexed.

/usr/share/doc/socat/copyright is in socat 1.7.3.1-2+deb9u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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This work was packaged for Debian by:
    Chris Taylor <ctaylor@debian.org> on Wed, 10 Feb 2010 14:07:57 -0800
Was taken over on Sun, 21 Jul 2013 16:19:26 +0200 by:
    Laszlo Boszormenyi (GCS) <gcs@debian.org>

It was downloaded from:

    <http://www.dest-unreach.org/socat/>

Upstream Author:

   Gerhard Rieger <socat@dest-unreach.org> 

Copyright:

    Copyright (C) 2001-2010 Gerhard Rieger

License:
 
   socat is licensed under the GPL version 2. The full text of which can be
   found on Debian systems in "/usr/share/common-licenses/GPL-2".

   In addition, as a special exception, the copyright holder gives permission
   to link the code of this program with any version of the OpenSSL library
   which is distributed under a license identical to that listed in the included
   COPYING.OpenSSL file, and distribute linked combinations including the two.
   You must obey the GNU General Public License in all respects for all of the
   code used other than OpenSSL. If you modify this file, you may extend this
   exception to your version of the file, but you are not obligated to do so. If
   you do not wish to do so, delete this exception statement from your version.

   This program 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 program 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.

The Debian packaging is:

    Copyright (C) 2002-2009 Thomas Seyrat <tomasera@debian.org>
    Copyright (C) 2010 Chris Taylor <ctaylor@debian.org>
    Copyright (C) 2013- Laszlo Boszormenyi (GCS) <gcs@debian.org>

and is licensed under the GPL version 3,
see "/usr/share/common-licenses/GPL-3".

All files listed below have different copyright and/or license:

Files: install-sh
Copyright: 1991, Massachusetts Institute of Technology
License:

  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation, and that the name of M.I.T. not be used in advertising or
  publicity pertaining to distribution of the software without specific,
  written prior permission.  M.I.T. makes no representations about the
  suitability of this software for any purpose.  It is provided "as is"
  without express or implied warranty.