GNU diff was written by Paul Eggert, Mike Haertel, David Hayes,

Richard Stallman, and Len Tower.

GNU diff3 was written by Randy Smith.

GNU sdiff was written by Thomas Lord.

GNU cmp was written by Torbjorn Granlund and David MacKenzie.

The diffutils manual was written by David MacKenzie, Paul Eggert, and

Richard Stallman.  Parts are adapted by from a manual page written by

Larry Wall, with his permission.

Many other people have contributed to GNU diffutils, including Wayne

Davison, Patrick D'Cruze, F. Thomas May, Greg McGary, Chip Rosenthal,

and Eli Zaretskii.

The following contributions warranted legal paper exchanges with the

Free Software Foundation.  Also see the files ChangeLog and THANKS.

Leonard H. Tower Jr.

Torbjorn Granlund

Mike Haertel

David S. Hayes

Randall Smith

Richard Stallman

F. Thomas May

Wayne Davison

Paul R. Eggert

Chip Rosenthal

Wayne Davison

Patrick D'Cruze

Eli Zaretskii

Copyright (C) 2001, 2006, 2009-2013, 2015-2017 Free Software Foundation, Inc.

This file is part of GNU diffutils.

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 3 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.

You should have received a copy of the GNU General Public License

along with this program.  If not, see <http://www.gnu.org/licenses/>.