The Debian bug reporter is copyright 2003-2005 by 
Petter Reinholdtsen <pere@debian.org>, Joey Hess <joeyh@debian-org>, and
the debian-installer team.

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; version 2 of the License.

On Debian systems, a copy of the GPL is in /usr/share/common-licenses/GPL-2

For the script usb-list:
  Original version: http://article.gmane.org/gmane.linux.usb.general/16828
  Adapted for Debian Installer by Frans Pop.
  Copyright: 2009 Greg Kroah-Hartman <greg@kroah.com>
             2009 Randy Dunlap <rdunlap@xenotime.net>
             2009 Frans Pop <elendil@planet.nl>
  This software may be used and distributed according to the terms of
  the GNU General Public License (GPL), version 2, or at your option
  any later version.