This is Debian's package maintenance system. To build your own packages install the `dpkg-dev' package and read the manuals which it installs in /usr/share/doc/dpkg and look at the `hello' example package. Copyright (C) 1994-1999 Ian Jackson Copyright (C) 1999 Richard Kettlewell Copyright (C) 1999-2000 Wichert Akkerman Copyright (C) 1999 Ben Collins Copyright (C) 1997-1998 Juho Vuori Copyright (C) 1998 Nils Rennebarth Copyright (C) 1996,1998 Miquel van Smoorenburg Copyright (C) 1998 Juan Cespedes Copyright (C) 1998 Jim Van Zandt copyright (C) 1997 Charles Briscoe-Smith Copyright (C) 1995,1996 Erick Branderhorst Copyright (C) 1996 Kim-Minh Kaplan Copyright (C) 1996 Michael Shields Copyright (C) 1995 Bruce Perens Copyright (C) 1994 Carl Streeter Copyright (C) 1994 Matt Welsh Copyright (C) 1994 Ian Murdock Parts written by Colin Plumb and Branko Lankester in 1993. This 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, or (at your option) any later version. This 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 with your Debian GNU/Linux system, in /usr/share/common-licenses/GPL, or with the dpkg source package as the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. /usr/bin/md5sum is compiled from md5.[ch] (written by Colin Plumb in 1993 and modified by Ian Jackson in 1995) and md5sum.c (written by Branko Lankester in 1993 and modified by Colin Plumb in 1993 and Ian Jackson in 1995). The sources and the binary are all in the public domain.