This is the Debian GNU/Linux prepackaged version of GNU cpio
(including mt).

This package was put together by Clint Adams <schizo@debian.org>,
from sources obtained from ftp://ftp.gnu.org:/gnu/cpio

GNU cpio is Copyright (C) 1990, 1991, 1992, 2001, 2003, 2004, 2005,
2006, 2007 Free Software Foundation, Inc.

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, or (at your option)
any later version.

The text of the GPL can be found on Debian systems in
/usr/share/common-licenses/GPL-3 .