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+# dpkg manual page - deb(5)
+#
+# Copyright © 1995 Raul Miller
+# Copyright © 1996 Ian Jackson <ijackson@chiark.greenend.org.uk>
+# Copyright © 2000 Wichert Akkerman <wakkerma@debian.org>
+# Copyright © 2006-2017 Guillem Jover <guillem@debian.org>
+#
+# 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 of the License, 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
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+=encoding utf8
+
+=head1 NAME
+
+deb - Debian binary package format
+
+=head1 SYNOPSIS
+
+I<filename>B<.deb>
+
+=head1 DESCRIPTION
+
+The
+B<.deb>
+format is the Debian binary package file format.
+It is understood
+since dpkg 0.93.76, and is generated by default since dpkg 1.2.0 and
+1.1.1elf (i386/ELF builds).
+
+The format described here is used since Debian 0.93; details of the
+old format are described in
+L<deb-old(5)>.
+
+=head1 FORMAT
+
+The file is an
+B<ar>
+archive with a magic value of
+B<!E<lt>archE<gt>>.
+Only the common B<ar> archive format is supported, with no long file
+name extensions, but with file names containing an optional trailing
+slash, which limits their length to 15 characters (from the 16 allowed).
+File sizes are limited to 10 ASCII decimal digits, allowing for up to
+approximately 9536.74 MiB member files.
+
+The B<tar> archives currently allowed are, the old-style (v7) format,
+the pre-POSIX ustar format, a subset of the GNU format (new style long
+pathnames and long linknames, supported since dpkg 1.4.1.17; large file
+metadata since dpkg 1.18.24),
+and the POSIX ustar format (long names supported since dpkg 1.15.0).
+Unrecognized tar typeflags are considered an error.
+Each tar entry size inside a tar archive is limited to 11 ASCII octal
+digits, allowing for up to 8 GiB tar entries.
+The GNU large file metadata support permits 95-bit tar entry sizes and
+negative timestamps, and 63-bit UID, GID and device numbers.
+
+The first member is named
+B<debian-binary>
+and contains a series of lines, separated by newlines.
+Currently only
+one line is present, the format version number,
+B<2.0>
+at the time this manual page was written.
+Programs which read new-format archives should be prepared for the
+minor number to be increased and new lines to be present, and should
+ignore these if this is the case.
+
+If the major number has changed, an incompatible change has been made
+and the program should stop.
+If it has not, then the program should
+be able to safely continue, unless it encounters an unexpected member
+in the archive (except at the end), as described below.
+
+The second required member is named
+B<control.tar>.
+It is a tar archive containing the package control information, either
+not compressed (supported since dpkg 1.17.6), or compressed with
+gzip (with B<.gz> extension) or
+xz (with B<.xz> extension, supported since 1.17.6),
+zstd (with B<.zst> extension, supported since dpkg 1.21.18),
+as a series of plain files, of which the file
+B<control>
+is mandatory and contains the core control information, the
+B<md5sums>,
+B<conffiles>, B<triggers>, B<shlibs>
+and
+B<symbols>
+files contain optional control information, and the
+B<preinst>, B<postinst>, B<prerm>
+and
+B<postrm>
+files are optional maintainer scripts.
+The control tarball may optionally contain an entry for
+‘B<.>’,
+the current directory.
+
+The third, last required member is named
+B<data.tar>.
+It contains the filesystem as a tar archive, either
+not compressed (supported since dpkg 1.10.24), or compressed with
+gzip (with B<.gz> extension),
+xz (with B<.xz> extension, supported since dpkg 1.15.6),
+zstd (with B<.zst> extension, supported since dpkg 1.21.18),
+bzip2 (with B<.bz2> extension, supported since dpkg 1.10.24) or
+lzma (with B<.lzma> extension, supported since dpkg 1.13.25).
+
+These members must occur in this exact order.
+Current implementations
+should ignore any additional members after
+B<data.tar>.
+Further members may be defined in the future, and (if possible) will be
+placed after these three.
+Any additional members that may need to be
+inserted after
+B<debian-binary>
+and before
+B<control.tar>
+or
+B<data.tar>
+and which should be safely ignored by older programs, will have names
+starting with an underscore,
+‘B<_>’.
+
+Those new members which won't be able to be safely ignored will be
+inserted before
+B<data.tar>
+with names starting with something other than underscores, or will
+(more likely) cause the major version number to be increased.
+
+=head1 MEDIA TYPE
+
+=head2 Current
+
+application/vnd.debian.binary-package
+
+=head2 Deprecated
+
+application/x-debian-package
+
+application/x-deb
+
+=head1 SEE ALSO
+
+L<deb-old(5)>,
+L<dpkg-deb(1)>,
+L<deb-control(5)>,
+L<deb-conffiles(5)>,
+L<deb-md5sums(5)>,
+L<deb-triggers(5)>,
+L<deb-shlibs(5)>,
+L<deb-symbols(5)>,
+L<deb-preinst(5)>,
+L<deb-postinst(5)>,
+L<deb-prerm(5)>,
+L<deb-postrm(5)>.