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<title>Debian Policy Manual - Binary packages (from old Packaging Manual)</title>

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<link href="ch-scope.html" rel="chapter" title="1 About this manual">
<link href="ch-archive.html" rel="chapter" title="2 The Debian Archive">
<link href="ch-binary.html" rel="chapter" title="3 Binary packages">
<link href="ch-source.html" rel="chapter" title="4 Source packages">
<link href="ch-controlfields.html" rel="chapter" title="5 Control files and their fields">
<link href="ch-maintainerscripts.html" rel="chapter" title="6 Package maintainer scripts and installation procedure">
<link href="ch-relationships.html" rel="chapter" title="7 Declaring relationships between packages">
<link href="ch-sharedlibs.html" rel="chapter" title="8 Shared libraries">
<link href="ch-opersys.html" rel="chapter" title="9 The Operating System">
<link href="ch-files.html" rel="chapter" title="10 Files">
<link href="ch-customized-programs.html" rel="chapter" title="11 Customized programs">
<link href="ch-docs.html" rel="chapter" title="12 Documentation">
<link href="ap-pkg-scope.html" rel="appendix" title="A Introduction and scope of these appendices">
<link href="ap-pkg-binarypkg.html" rel="appendix" title="B Binary packages (from old Packaging Manual)">
<link href="ap-pkg-sourcepkg.html" rel="appendix" title="C Source packages (from old Packaging Manual)">
<link href="ap-pkg-controlfields.html" rel="appendix" title="D Control files and their fields (from old Packaging Manual)">
<link href="ap-pkg-conffiles.html" rel="appendix" title="E Configuration file handling (from old Packaging Manual)">
<link href="ap-pkg-alternatives.html" rel="appendix" title="F Alternative versions of an interface - update-alternatives (from old Packaging Manual)">
<link href="ap-pkg-diversions.html" rel="appendix" title="G Diversions - overriding a package's version of a file (from old Packaging Manual)">
<link href="ch-scope.html#s1.1" rel="section" title="1.1 Scope">
<link href="ch-scope.html#s1.2" rel="section" title="1.2 New versions of this document">
<link href="ch-scope.html#s-authors" rel="section" title="1.3 Authors and Maintainers">
<link href="ch-scope.html#s-related" rel="section" title="1.4 Related documents">
<link href="ch-scope.html#s-definitions" rel="section" title="1.5 Definitions">
<link href="ch-archive.html#s-dfsg" rel="section" title="2.1 The Debian Free Software Guidelines">
<link href="ch-archive.html#s-sections" rel="section" title="2.2 Archive areas">
<link href="ch-archive.html#s-pkgcopyright" rel="section" title="2.3 Copyright considerations">
<link href="ch-archive.html#s-subsections" rel="section" title="2.4 Sections">
<link href="ch-archive.html#s-priorities" rel="section" title="2.5 Priorities">
<link href="ch-binary.html#s3.1" rel="section" title="3.1 The package name">
<link href="ch-binary.html#s-versions" rel="section" title="3.2 The version of a package">
<link href="ch-binary.html#s-maintainer" rel="section" title="3.3 The maintainer of a package">
<link href="ch-binary.html#s-descriptions" rel="section" title="3.4 The description of a package">
<link href="ch-binary.html#s-dependencies" rel="section" title="3.5 Dependencies">
<link href="ch-binary.html#s-virtual_pkg" rel="section" title="3.6 Virtual packages">
<link href="ch-binary.html#s3.7" rel="section" title="3.7 Base system">
<link href="ch-binary.html#s3.8" rel="section" title="3.8 Essential packages">
<link href="ch-binary.html#s-maintscripts" rel="section" title="3.9 Maintainer Scripts">
<link href="ch-source.html#s-standardsversion" rel="section" title="4.1 Standards conformance">
<link href="ch-source.html#s-pkg-relations" rel="section" title="4.2 Package relationships">
<link href="ch-source.html#s4.3" rel="section" title="4.3 Changes to the upstream sources">
<link href="ch-source.html#s-dpkgchangelog" rel="section" title="4.4 Debian changelog: debian/changelog">
<link href="ch-source.html#s-dpkgcopyright" rel="section" title="4.5 Copyright: debian/copyright">
<link href="ch-source.html#s4.6" rel="section" title="4.6 Error trapping in makefiles">
<link href="ch-source.html#s-timestamps" rel="section" title="4.7 Time Stamps">
<link href="ch-source.html#s-restrictions" rel="section" title="4.8 Restrictions on objects in source packages">
<link href="ch-source.html#s-debianrules" rel="section" title="4.9 Main building script: debian/rules">
<link href="ch-source.html#s-substvars" rel="section" title="4.10 Variable substitutions: debian/substvars">
<link href="ch-source.html#s-debianwatch" rel="section" title="4.11 Optional upstream source location: debian/watch">
<link href="ch-source.html#s-debianfiles" rel="section" title="4.12 Generated files list: debian/files">
<link href="ch-source.html#s-embeddedfiles" rel="section" title="4.13 Convenience copies of code">
<link href="ch-source.html#s-readmesource" rel="section" title="4.14 Source package handling: debian/README.source">
<link href="ch-controlfields.html#s-controlsyntax" rel="section" title="5.1 Syntax of control files">
<link href="ch-controlfields.html#s-sourcecontrolfiles" rel="section" title="5.2 Source package control files -- debian/control">
<link href="ch-controlfields.html#s-binarycontrolfiles" rel="section" title="5.3 Binary package control files -- DEBIAN/control">
<link href="ch-controlfields.html#s-debiansourcecontrolfiles" rel="section" title="5.4 Debian source control files -- .dsc">
<link href="ch-controlfields.html#s-debianchangesfiles" rel="section" title="5.5 Debian changes files -- .changes">
<link href="ch-controlfields.html#s-controlfieldslist" rel="section" title="5.6 List of fields">
<link href="ch-controlfields.html#s5.7" rel="section" title="5.7 User-defined fields">
<link href="ch-maintainerscripts.html#s6.1" rel="section" title="6.1 Introduction to package maintainer scripts">
<link href="ch-maintainerscripts.html#s-idempotency" rel="section" title="6.2 Maintainer scripts idempotency">
<link href="ch-maintainerscripts.html#s-controllingterminal" rel="section" title="6.3 Controlling terminal for maintainer scripts">
<link href="ch-maintainerscripts.html#s-exitstatus" rel="section" title="6.4 Exit status">
<link href="ch-maintainerscripts.html#s-mscriptsinstact" rel="section" title="6.5 Summary of ways maintainer scripts are called">
<link href="ch-maintainerscripts.html#s-unpackphase" rel="section" title="6.6 Details of unpack phase of installation or upgrade">
<link href="ch-maintainerscripts.html#s-configdetails" rel="section" title="6.7 Details of configuration">
<link href="ch-maintainerscripts.html#s-removedetails" rel="section" title="6.8 Details of removal and/or configuration purging">
<link href="ch-relationships.html#s-depsyntax" rel="section" title="7.1 Syntax of relationship fields">
<link href="ch-relationships.html#s-binarydeps" rel="section" title="7.2 Binary Dependencies - Depends, Recommends, Suggests, Enhances, Pre-Depends">
<link href="ch-relationships.html#s-breaks" rel="section" title="7.3 Packages which break other packages - Breaks">
<link href="ch-relationships.html#s-conflicts" rel="section" title="7.4 Conflicting binary packages - Conflicts">
<link href="ch-relationships.html#s-virtual" rel="section" title="7.5 Virtual packages - Provides">
<link href="ch-relationships.html#s-replaces" rel="section" title="7.6 Overwriting files and replacing packages - Replaces">
<link href="ch-relationships.html#s-sourcebinarydeps" rel="section" title="7.7 Relationships between source and binary packages - Build-Depends, Build-Depends-Indep, Build-Conflicts, Build-Conflicts-Indep">
<link href="ch-sharedlibs.html#s-sharedlibs-runtime" rel="section" title="8.1 Run-time shared libraries">
<link href="ch-sharedlibs.html#s-sharedlibs-support-files" rel="section" title="8.2 Shared library support files">
<link href="ch-sharedlibs.html#s-sharedlibs-static" rel="section" title="8.3 Static libraries">
<link href="ch-sharedlibs.html#s-sharedlibs-dev" rel="section" title="8.4 Development files">
<link href="ch-sharedlibs.html#s-sharedlibs-intradeps" rel="section" title="8.5 Dependencies between the packages of the same library">
<link href="ch-sharedlibs.html#s-sharedlibs-shlibdeps" rel="section" title="8.6 Dependencies between the library and other packages - the shlibs system">
<link href="ch-opersys.html#s9.1" rel="section" title="9.1 File system hierarchy">
<link href="ch-opersys.html#s9.2" rel="section" title="9.2 Users and groups">
<link href="ch-opersys.html#s-sysvinit" rel="section" title="9.3 System run levels and init.d scripts">
<link href="ch-opersys.html#s9.4" rel="section" title="9.4 Console messages from init.d scripts">
<link href="ch-opersys.html#s-cron-jobs" rel="section" title="9.5 Cron jobs">
<link href="ch-opersys.html#s-menus" rel="section" title="9.6 Menus">
<link href="ch-opersys.html#s-mime" rel="section" title="9.7 Multimedia handlers">
<link href="ch-opersys.html#s9.8" rel="section" title="9.8 Keyboard configuration">
<link href="ch-opersys.html#s9.9" rel="section" title="9.9 Environment variables">
<link href="ch-opersys.html#s-doc-base" rel="section" title="9.10 Registering Documents using doc-base">
<link href="ch-files.html#s-binaries" rel="section" title="10.1 Binaries">
<link href="ch-files.html#s-libraries" rel="section" title="10.2 Libraries">
<link href="ch-files.html#s10.3" rel="section" title="10.3 Shared libraries">
<link href="ch-files.html#s-scripts" rel="section" title="10.4 Scripts">
<link href="ch-files.html#s10.5" rel="section" title="10.5 Symbolic links">
<link href="ch-files.html#s10.6" rel="section" title="10.6 Device files">
<link href="ch-files.html#s-config-files" rel="section" title="10.7 Configuration files">
<link href="ch-files.html#s10.8" rel="section" title="10.8 Log files">
<link href="ch-files.html#s-permissions-owners" rel="section" title="10.9 Permissions and owners">
<link href="ch-customized-programs.html#s-arch-spec" rel="section" title="11.1 Architecture specification strings">
<link href="ch-customized-programs.html#s11.2" rel="section" title="11.2 Daemons">
<link href="ch-customized-programs.html#s11.3" rel="section" title="11.3 Using pseudo-ttys and modifying wtmp, utmp and lastlog">
<link href="ch-customized-programs.html#s11.4" rel="section" title="11.4 Editors and pagers">
<link href="ch-customized-programs.html#s-web-appl" rel="section" title="11.5 Web servers and applications">
<link href="ch-customized-programs.html#s-mail-transport-agents" rel="section" title="11.6 Mail transport, delivery and user agents">
<link href="ch-customized-programs.html#s11.7" rel="section" title="11.7 News system configuration">
<link href="ch-customized-programs.html#s11.8" rel="section" title="11.8 Programs for the X Window System">
<link href="ch-customized-programs.html#s-perl" rel="section" title="11.9 Perl programs and modules">
<link href="ch-customized-programs.html#s-emacs" rel="section" title="11.10 Emacs lisp programs">
<link href="ch-customized-programs.html#s11.11" rel="section" title="11.11 Games">
<link href="ch-docs.html#s12.1" rel="section" title="12.1 Manual pages">
<link href="ch-docs.html#s12.2" rel="section" title="12.2 Info documents">
<link href="ch-docs.html#s12.3" rel="section" title="12.3 Additional documentation">
<link href="ch-docs.html#s12.4" rel="section" title="12.4 Preferred documentation formats">
<link href="ch-docs.html#s-copyrightfile" rel="section" title="12.5 Copyright information">
<link href="ch-docs.html#s12.6" rel="section" title="12.6 Examples">
<link href="ch-docs.html#s-changelogs" rel="section" title="12.7 Changelog files">
<link href="ap-pkg-binarypkg.html#s-pkg-bincreating" rel="section" title="B.1 Creating package files - dpkg-deb">
<link href="ap-pkg-binarypkg.html#s-pkg-controlarea" rel="section" title="B.2 Package control information files">
<link href="ap-pkg-binarypkg.html#s-pkg-controlfile" rel="section" title="B.3 The main control information file: control">
<link href="ap-pkg-binarypkg.html#sB.4" rel="section" title="B.4 Time Stamps">
<link href="ap-pkg-sourcepkg.html#s-pkg-sourcetools" rel="section" title="C.1 Tools for processing source packages">
<link href="ap-pkg-sourcepkg.html#s-pkg-sourcetree" rel="section" title="C.2 The Debian package source tree">
<link href="ap-pkg-sourcepkg.html#s-pkg-sourcearchives" rel="section" title="C.3 Source packages as archives">
<link href="ap-pkg-sourcepkg.html#sC.4" rel="section" title="C.4 Unpacking a Debian source package without dpkg-source">
<link href="ap-pkg-controlfields.html#sD.1" rel="section" title="D.1 Syntax of control files">
<link href="ap-pkg-controlfields.html#sD.2" rel="section" title="D.2 List of fields">
<link href="ap-pkg-conffiles.html#sE.1" rel="section" title="E.1 Automatic handling of configuration files by dpkg">
<link href="ap-pkg-conffiles.html#sE.2" rel="section" title="E.2 Fully-featured maintainer script configuration handling">
<link href="ch-archive.html#s-main" rel="subsection" title="2.2.1 The main archive area">
<link href="ch-archive.html#s-contrib" rel="subsection" title="2.2.2 The contrib archive area">
<link href="ch-archive.html#s-non-free" rel="subsection" title="2.2.3 The non-free archive area">
<link href="ch-binary.html#s3.2.1" rel="subsection" title="3.2.1 Version numbers based on dates">
<link href="ch-binary.html#s-synopsis" rel="subsection" title="3.4.1 The single line synopsis">
<link href="ch-binary.html#s-extendeddesc" rel="subsection" title="3.4.2 The extended description">
<link href="ch-binary.html#s-maintscriptprompt" rel="subsection" title="3.9.1 Prompting in maintainer scripts">
<link href="ch-source.html#s-debianrules-options" rel="subsection" title="4.9.1 debian/rules and DEB_BUILD_OPTIONS">
<link href="ch-controlfields.html#s-f-Source" rel="subsection" title="5.6.1 Source">
<link href="ch-controlfields.html#s-f-Maintainer" rel="subsection" title="5.6.2 Maintainer">
<link href="ch-controlfields.html#s-f-Uploaders" rel="subsection" title="5.6.3 Uploaders">
<link href="ch-controlfields.html#s-f-Changed-By" rel="subsection" title="5.6.4 Changed-By">
<link href="ch-controlfields.html#s-f-Section" rel="subsection" title="5.6.5 Section">
<link href="ch-controlfields.html#s-f-Priority" rel="subsection" title="5.6.6 Priority">
<link href="ch-controlfields.html#s-f-Package" rel="subsection" title="5.6.7 Package">
<link href="ch-controlfields.html#s-f-Architecture" rel="subsection" title="5.6.8 Architecture">
<link href="ch-controlfields.html#s-f-Essential" rel="subsection" title="5.6.9 Essential">
<link href="ch-controlfields.html#s5.6.10" rel="subsection" title="5.6.10 Package interrelationship fields: Depends, Pre-Depends, Recommends, Suggests, Breaks, Conflicts, Provides, Replaces, Enhances">
<link href="ch-controlfields.html#s-f-Standards-Version" rel="subsection" title="5.6.11 Standards-Version">
<link href="ch-controlfields.html#s-f-Version" rel="subsection" title="5.6.12 Version">
<link href="ch-controlfields.html#s-f-Description" rel="subsection" title="5.6.13 Description">
<link href="ch-controlfields.html#s-f-Distribution" rel="subsection" title="5.6.14 Distribution">
<link href="ch-controlfields.html#s-f-Date" rel="subsection" title="5.6.15 Date">
<link href="ch-controlfields.html#s-f-Format" rel="subsection" title="5.6.16 Format">
<link href="ch-controlfields.html#s-f-Urgency" rel="subsection" title="5.6.17 Urgency">
<link href="ch-controlfields.html#s-f-Changes" rel="subsection" title="5.6.18 Changes">
<link href="ch-controlfields.html#s-f-Binary" rel="subsection" title="5.6.19 Binary">
<link href="ch-controlfields.html#s-f-Installed-Size" rel="subsection" title="5.6.20 Installed-Size">
<link href="ch-controlfields.html#s-f-Files" rel="subsection" title="5.6.21 Files">
<link href="ch-controlfields.html#s-f-Closes" rel="subsection" title="5.6.22 Closes">
<link href="ch-controlfields.html#s-f-Homepage" rel="subsection" title="5.6.23 Homepage">
<link href="ch-controlfields.html#s-f-Checksums" rel="subsection" title="5.6.24 Checksums-Sha1 and Checksums-Sha256">
<link href="ch-controlfields.html#s-f-DM-Upload-Allowed" rel="subsection" title="5.6.25 DM-Upload-Allowed">
<link href="ch-relationships.html#s7.6.1" rel="subsection" title="7.6.1 Overwriting files in other packages">
<link href="ch-relationships.html#s7.6.2" rel="subsection" title="7.6.2 Replacing whole packages, forcing their removal">
<link href="ch-sharedlibs.html#s-ldconfig" rel="subsection" title="8.1.1 ldconfig">
<link href="ch-sharedlibs.html#s8.6.1" rel="subsection" title="8.6.1 The shlibs files present on the system">
<link href="ch-sharedlibs.html#s8.6.2" rel="subsection" title="8.6.2 How to use dpkg-shlibdeps and the shlibs files">
<link href="ch-sharedlibs.html#s-shlibs" rel="subsection" title="8.6.3 The shlibs File Format">
<link href="ch-sharedlibs.html#s8.6.4" rel="subsection" title="8.6.4 Providing a shlibs file">
<link href="ch-opersys.html#s-fhs" rel="subsection" title="9.1.1 File System Structure">
<link href="ch-opersys.html#s9.1.2" rel="subsection" title="9.1.2 Site-specific programs">
<link href="ch-opersys.html#s9.1.3" rel="subsection" title="9.1.3 The system-wide mail directory">
<link href="ch-opersys.html#s-fhs-run" rel="subsection" title="9.1.4 /run and /run/lock">
<link href="ch-opersys.html#s9.2.1" rel="subsection" title="9.2.1 Introduction">
<link href="ch-opersys.html#s9.2.2" rel="subsection" title="9.2.2 UID and GID classes">
<link href="ch-opersys.html#s-/etc/init.d" rel="subsection" title="9.3.1 Introduction">
<link href="ch-opersys.html#s-writing-init" rel="subsection" title="9.3.2 Writing the scripts">
<link href="ch-opersys.html#s9.3.3" rel="subsection" title="9.3.3 Interfacing with the initscript system">
<link href="ch-opersys.html#s9.3.3.1" rel="subsection" title="9.3.3.1 Managing the links">
<link href="ch-opersys.html#s9.3.3.2" rel="subsection" title="9.3.3.2 Running initscripts">
<link href="ch-opersys.html#s9.3.4" rel="subsection" title="9.3.4 Boot-time initialization">
<link href="ch-opersys.html#s9.3.5" rel="subsection" title="9.3.5 Example">
<link href="ch-opersys.html#s-cron-files" rel="subsection" title="9.5.1 Cron job file names">
<link href="ch-files.html#s10.7.1" rel="subsection" title="10.7.1 Definitions">
<link href="ch-files.html#s10.7.2" rel="subsection" title="10.7.2 Location">
<link href="ch-files.html#s10.7.3" rel="subsection" title="10.7.3 Behavior">
<link href="ch-files.html#s10.7.4" rel="subsection" title="10.7.4 Sharing configuration files">
<link href="ch-files.html#s10.7.5" rel="subsection" title="10.7.5 User configuration files (&quot;dotfiles&quot;)">
<link href="ch-files.html#s10.9.1" rel="subsection" title="10.9.1 The use of dpkg-statoverride">
<link href="ch-customized-programs.html#s-arch-wildcard-spec" rel="subsection" title="11.1.1 Architecture wildcards">
<link href="ch-customized-programs.html#s11.8.1" rel="subsection" title="11.8.1 Providing X support and package priorities">
<link href="ch-customized-programs.html#s11.8.2" rel="subsection" title="11.8.2 Packages providing an X server">
<link href="ch-customized-programs.html#s11.8.3" rel="subsection" title="11.8.3 Packages providing a terminal emulator">
<link href="ch-customized-programs.html#s11.8.4" rel="subsection" title="11.8.4 Packages providing a window manager">
<link href="ch-customized-programs.html#s11.8.5" rel="subsection" title="11.8.5 Packages providing fonts">
<link href="ch-customized-programs.html#s-appdefaults" rel="subsection" title="11.8.6 Application defaults files">
<link href="ch-customized-programs.html#s11.8.7" rel="subsection" title="11.8.7 Installation directory issues">
<link href="ch-docs.html#s-copyrightformat" rel="subsection" title="12.5.1 Machine-readable copyright information">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-source" rel="subsection" title="C.1.1 dpkg-source - packs and unpacks Debian source packages">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-buildpackage" rel="subsection" title="C.1.2 dpkg-buildpackage - overall package-building control script">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-gencontrol" rel="subsection" title="C.1.3 dpkg-gencontrol - generates binary package control files">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-shlibdeps" rel="subsection" title="C.1.4 dpkg-shlibdeps - calculates shared library dependencies">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-distaddfile" rel="subsection" title="C.1.5 dpkg-distaddfile - adds a file to debian/files">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-genchanges" rel="subsection" title="C.1.6 dpkg-genchanges - generates a .changes upload control file">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-parsechangelog" rel="subsection" title="C.1.7 dpkg-parsechangelog - produces parsed representation of a changelog">
<link href="ap-pkg-sourcepkg.html#s-pkg-dpkg-architecture" rel="subsection" title="C.1.8 dpkg-architecture - information about the build and host system">
<link href="ap-pkg-sourcepkg.html#s-pkg-debianrules" rel="subsection" title="C.2.1 debian/rules - the main building script">
<link href="ap-pkg-sourcepkg.html#s-pkg-srcsubstvars" rel="subsection" title="C.2.2 debian/substvars and variable substitutions">
<link href="ap-pkg-sourcepkg.html#sC.2.3" rel="subsection" title="C.2.3 debian/files">
<link href="ap-pkg-sourcepkg.html#sC.2.4" rel="subsection" title="C.2.4 debian/tmp">
<link href="ap-pkg-sourcepkg.html#sC.4.1" rel="subsection" title="C.4.1 Restrictions on objects in source packages">
<link href="ap-pkg-controlfields.html#s-pkg-f-Filename" rel="subsection" title="D.2.1 Filename and MSDOS-Filename">
<link href="ap-pkg-controlfields.html#s-pkg-f-Size" rel="subsection" title="D.2.2 Size and MD5sum">
<link href="ap-pkg-controlfields.html#s-pkg-f-Status" rel="subsection" title="D.2.3 Status">
<link href="ap-pkg-controlfields.html#s-pkg-f-Config-Version" rel="subsection" title="D.2.4 Config-Version">
<link href="ap-pkg-controlfields.html#s-pkg-f-Conffiles" rel="subsection" title="D.2.5 Conffiles">
<link href="ap-pkg-controlfields.html#sD.2.6" rel="subsection" title="D.2.6 Obsolete fields">

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[ <a href="ap-pkg-scope.html">A</a> ]
[ B ]
[ <a href="ap-pkg-sourcepkg.html">C</a> ]
[ <a href="ap-pkg-controlfields.html">D</a> ]
[ <a href="ap-pkg-conffiles.html">E</a> ]
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</p>

<hr>

<h1>
Debian Policy Manual
<br>Appendix B - Binary packages (from old Packaging Manual)</h1>

<hr>

<p>
The binary package has two main sections.  The first part consists of various
control information files and scripts used by <code>dpkg</code> when installing
and removing.  See <a href="#s-pkg-controlarea">Package control information
files, Section B.2</a>.
</p>

<p>
The second part is an archive containing the files and directories to be
installed.
</p>

<p>
In the future binary packages may also contain other components, such as
checksums and digital signatures.  The format for the archive is described in
full in the <code>deb(5)</code> man page.
</p>

<hr>

<h2><a name="s-pkg-bincreating"></a>B.1 Creating package files - <code>dpkg-deb</code></h2>

<p>
All manipulation of binary package files is done by <code>dpkg-deb</code>; it's
the only program that has knowledge of the format.  (<code>dpkg-deb</code> may
be invoked by calling <code>dpkg</code>, as <code>dpkg</code> will spot that
the options requested are appropriate to <code>dpkg-deb</code> and invoke that
instead with the same arguments.)
</p>

<p>
In order to create a binary package you must make a directory tree which
contains all the files and directories you want to have in the file system data
part of the package.  In Debian-format source packages this directory is
usually <code>debian/tmp</code>, relative to the top of the package's source
tree.
</p>

<p>
They should have the locations (relative to the root of the directory tree
you're constructing) ownerships and permissions which you want them to have on
the system when they are installed.
</p>

<p>
With current versions of <code>dpkg</code> the uid/username and gid/groupname
mappings for the users and groups being used should be the same on the system
where the package is built and the one where it is installed.
</p>

<p>
You need to add one special directory to the root of the miniature file system
tree you're creating: <code>DEBIAN</code>.  It should contain the control
information files, notably the binary package control file (see <a
href="#s-pkg-controlfile">The main control information file:
<samp>control</samp>, Section B.3</a>).
</p>

<p>
The <code>DEBIAN</code> directory will not appear in the file system archive of
the package, and so won't be installed by <code>dpkg</code> when the package is
unpacked.
</p>

<p>
When you've prepared the package, you should invoke:
</p>

<pre>
       dpkg --build <var>directory</var>
</pre>

<p>
This will build the package in <code><var>directory</var>.deb</code>.
(<code>dpkg</code> knows that <samp>--build</samp> is a <code>dpkg-deb</code>
option, so it invokes <code>dpkg-deb</code> with the same arguments to build
the package.)
</p>

<p>
See the man page <code>dpkg-deb(8)</code> for details of how to examine the
contents of this newly-created file.  You may find the output of following
commands enlightening:
</p>

<pre>
       dpkg-deb --info <var>filename</var>.deb
       dpkg-deb --contents <var>filename</var>.deb
       dpkg --contents <var>filename</var>.deb
</pre>

<p>
To view the copyright file for a package you could use this command:
</p>

<pre>
       dpkg --fsys-tarfile <var>filename</var>.deb | tar xOf - --wildcards \*/copyright | pager
</pre>

<hr>

<h2><a name="s-pkg-controlarea"></a>B.2 Package control information files</h2>

<p>
The control information portion of a binary package is a collection of files
with names known to <code>dpkg</code>.  It will treat the contents of these
files specially - some of them contain information used by <code>dpkg</code>
when installing or removing the package; others are scripts which the package
maintainer wants <code>dpkg</code> to run.
</p>

<p>
It is possible to put other files in the package control information file area,
but this is not generally a good idea (though they will largely be ignored).
</p>

<p>
Here is a brief list of the control information files supported by
<code>dpkg</code> and a summary of what they're used for.
</p>
<dl>
<dt><samp>control</samp></dt>
<dd>
<p>
This is the key description file used by <code>dpkg</code>.  It specifies the
package's name and version, gives its description for the user, states its
relationships with other packages, and so forth.  See <a
href="ch-controlfields.html#s-sourcecontrolfiles">Source package control files
-- <code>debian/control</code>, Section 5.2</a> and <a
href="ch-controlfields.html#s-binarycontrolfiles">Binary package control files
-- <code>DEBIAN/control</code>, Section 5.3</a>.
</p>

<p>
It is usually generated automatically from information in the source package by
the <code>dpkg-gencontrol</code> program, and with assistance from
<code>dpkg-shlibdeps</code>.  See <a
href="ap-pkg-sourcepkg.html#s-pkg-sourcetools">Tools for processing source
packages, Section C.1</a>.
</p>
</dd>
</dl>
<dl>
<dt><samp>postinst</samp>, <samp>preinst</samp>, <samp>postrm</samp>, <samp>prerm</samp></dt>
<dd>
<p>
These are executable files (usually scripts) which <code>dpkg</code> runs
during installation, upgrade and removal of packages.  They allow the package
to deal with matters which are particular to that package or require more
complicated processing than that provided by <code>dpkg</code>.  Details of
when and how they are called are in <a href="ch-maintainerscripts.html">Package
maintainer scripts and installation procedure, Chapter 6</a>.
</p>

<p>
It is very important to make these scripts idempotent.  See <a
href="ch-maintainerscripts.html#s-idempotency">Maintainer scripts idempotency,
Section 6.2</a>.
</p>

<p>
The maintainer scripts are not guaranteed to run with a controlling terminal
and may not be able to interact with the user.  See <a
href="ch-maintainerscripts.html#s-controllingterminal">Controlling terminal for
maintainer scripts, Section 6.3</a>.
</p>
</dd>
</dl>
<dl>
<dt><samp>conffiles</samp></dt>
<dd>
<p>
This file contains a list of configuration files which are to be handled
automatically by <code>dpkg</code> (see <a
href="ap-pkg-conffiles.html">Configuration file handling (from old Packaging
Manual), Appendix E</a>).  Note that not necessarily every configuration file
should be listed here.
</p>
</dd>
</dl>
<dl>
<dt><samp>shlibs</samp></dt>
<dd>
<p>
This file contains a list of the shared libraries supplied by the package, with
dependency details for each.  This is used by <code>dpkg-shlibdeps</code> when
it determines what dependencies are required in a package control file.  The
<samp>shlibs</samp> file format is described on <a
href="ch-sharedlibs.html#s-shlibs">The <code>shlibs</code> File Format, Section
8.6.3</a>.
</p>
</dd>
</dl>

<hr>

<h2><a name="s-pkg-controlfile"></a>B.3 The main control information file: <samp>control</samp></h2>

<p>
The most important control information file used by <code>dpkg</code> when it
installs a package is <samp>control</samp>.  It contains all the package's
&quot;vital statistics&quot;.
</p>

<p>
The binary package control files of packages built from Debian sources are made
by a special tool, <code>dpkg-gencontrol</code>, which reads
<code>debian/control</code> and <code>debian/changelog</code> to find the
information it needs.  See <a href="ap-pkg-sourcepkg.html">Source packages
(from old Packaging Manual), Appendix C</a> for more details.
</p>

<p>
The fields in binary package control files are listed in <a
href="ch-controlfields.html#s-binarycontrolfiles">Binary package control files
-- <code>DEBIAN/control</code>, Section 5.3</a>.
</p>

<p>
A description of the syntax of control files and the purpose of the fields is
available in <a href="ch-controlfields.html">Control files and their fields,
Chapter 5</a>.
</p>

<hr>

<h2><a name="sB.4"></a>B.4 Time Stamps</h2>

<p>
See <a href="ch-source.html#s-timestamps">Time Stamps, Section 4.7</a>.
</p>

<hr>

<p>
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[ <a href="index.html#contents">Contents</a> ]
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[ <a href="ch-binary.html">3</a> ]
[ <a href="ch-source.html">4</a> ]
[ <a href="ch-controlfields.html">5</a> ]
[ <a href="ch-maintainerscripts.html">6</a> ]
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[ <a href="ap-pkg-scope.html">A</a> ]
[ B ]
[ <a href="ap-pkg-sourcepkg.html">C</a> ]
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</p>

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<p>
Debian Policy Manual
</p>

<address>
version 3.9.3.1, 2012-03-13<br>
<br>
<a href="ch-scope.html#s-authors">The Debian Policy Mailing List</a><br>
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