dpkg-deb(1)



dpkg-deb(1)                       dpkg suite                       dpkg-deb(1)

NAME
       dpkg-deb - Debian package archive (.deb) manipulation tool

SYNOPSIS
       dpkg-deb [option...] command

DESCRIPTION
       dpkg-deb packs, unpacks and provides information about Debian archives.

       Use dpkg to install and remove packages from your system.

       You  can also invoke dpkg-deb by calling dpkg with whatever options you
       want to pass to dpkg-deb. dpkg will spot that you wanted  dpkg-deb  and
       run it for you.

       For  most commands taking an input archive argument, the archive can be
       read from standard input if the archive name is given as a single minus
       character  (<<->>);  otherwise  lack  of  support will be documented in
       their respective command description.

COMMANDS
       -b, --build binary-directory [archive|directory]
              Creates a debian archive from  the  filesystem  tree  stored  in
              binary-directory.    binary-directory   must   have   a   DEBIAN
              subdirectory, which contains the control information files  such
              as  the  control  file itself. This directory will not appear in
              the binary package's filesystem archive, but instead  the  files
              in  it  will  be put in the binary package's control information
              area.

              Unless you specify --nocheck, dpkg-deb will read  DEBIAN/control
              and parse it. It will check the file for syntax errors and other
              problems, and display the  name  of  the  binary  package  being
              built.    dpkg-deb  will  also  check  the  permissions  of  the
              maintainer scripts and other files found in the  DEBIAN  control
              information directory.

              If  no archive is specified then dpkg-deb will write the package
              into the file binary-directory.deb.

              If  the  archive  to  be  created  already  exists  it  will  be
              overwritten.

              If  the  second argument is a directory then dpkg-deb will write
              to the file directory/package_version_arch.deb.  When  a  target
              directory is specified, rather than a file, the --nocheck option
              may not be used (since dpkg-deb needs  to  read  and  parse  the
              package control file to determine which filename to use).

       -I, --info archive [control-file-name...]
              Provides information about a binary package archive.

              If  no  control-file-names  are  specified  then it will print a
              summary of the contents of the package as well  as  its  control
              file.

              If any control-file-names are specified then dpkg-deb will print
              them in the order they were specified; if any of the  components
              weren't  present  it will print an error message to stderr about
              each one and exit with status 2.

       -W, --show archive
              Provides information about  a  binary  package  archive  in  the
              format  specified  by  the  --showformat  argument.  The default
              format displays the package's name  and  version  on  one  line,
              separated by a tabulator.

       -f, --field archive [control-field-name...]
              Extracts control file information from a binary package archive.

              If  no  control-field-names are specified then it will print the
              whole control file.

              If any are specified then dpkg-deb will print their contents, in
              the order in which they appear in the control file. If more than
              one control-field-name is specified then dpkg-deb  will  precede
              each with its field name (and a colon and space).

              No errors are reported for fields requested but not found.

       -c, --contents archive
              Lists the contents of the filesystem tree archive portion of the
              package  archive.  It  is  currently  produced  in  the   format
              generated by tar's verbose listing.

       -x, --extract archive directory
              Extracts  the  filesystem  tree  from a package archive into the
              specified directory.

              Note that extracting a package to the root  directory  will  not
              result in a correct installation! Use dpkg to install packages.

              directory  (but  not  its parents) will be created if necessary,
              and its permissions  modified  to  match  the  contents  of  the
              package.

       -X, --vextract archive directory
              Is  like  --extract  (-x)  with  --verbose  (-v)  which prints a
              listing of the files extracted as it goes.

       -R, --raw-extract archive directory
              Extracts the filesystem tree  from  a  package  archive  into  a
              specified  directory,  and  the control information files into a
              DEBIAN subdirectory  of  the  specified  directory  (since  dpkg
              1.16.1).

              The  target  directory  (but not its parents) will be created if
              necessary.

              The input archive is not (currently) processed sequentially,  so
              reading it from standard input (<<->>) is not supported.

       --ctrl-tarfile archive
              Extracts  the control data from a binary package and sends it to
              standard output in tar format  (since  dpkg  1.17.14).  Together
              with  tar(1)  this  can  be used to extract a particular control
              file from a package archive.  The input archive will  always  be
              processed sequentially.

       --fsys-tarfile archive
              Extracts  the  filesystem  tree  data  from a binary package and
              sends it to standard output in tar format. Together with  tar(1)
              this  can  be  used  to extract a particular file from a package
              archive.   The  input   archive   will   always   be   processed
              sequentially.

       -e, --control archive [directory]
              Extracts  the  control  information files from a package archive
              into the specified directory.

              If no directory is specified then a subdirectory DEBIAN  in  the
              current directory is used.

              The  target  directory  (but not its parents) will be created if
              necessary.

       -?, --help
              Show the usage message and exit.

       --version
              Show the version and exit.

OPTIONS
       --showformat=format
              This option is used to specify the format of the  output  --show
              will  produce.  The  format  is a string that will be output for
              each package listed.

              The string may reference any status field  using  the  "${field-
              name}"  form,  a list of the valid fields can be easily produced
              using -I on the same package.  A  complete  explanation  of  the
              formatting   options   (including  escape  sequences  and  field
              tabbing) can be found in the  explanation  of  the  --showformat
              option in dpkg-query(1).

              The default for this field is "${Package}\t${Version}\n".

       -zcompress-level
              Specify  which  compression  level  to  use  on  the  compressor
              backend, when building a package (default is 9 for gzip,  6  for
              xz).   The  accepted  values  are  0-9  with:  0 being mapped to
              compressor none for  gzip.   Before  dpkg  1.16.2  level  0  was
              equivalent to compressor none for all compressors.

       -Scompress-strategy
              Specify  which  compression  strategy  to  use on the compressor
              backend, when building a package (since  dpkg  1.16.2).  Allowed
              values  are none (since dpkg 1.16.4), filtered, huffman, rle and
              fixed for gzip (since dpkg 1.17.0) and extreme for xz.

       -Zcompress-type
              Specify which compression type to use when building  a  package.
              Allowed  values  are  gzip,  xz  (since  dpkg  1.15.6), and none
              (default is xz).

       --uniform-compression
              Specify that the same compression parameters should be used  for
              all  archive  members (i.e. control.tar and data.tar; since dpkg
              1.17.6).  Otherwise only the  data.tar  member  will  use  those
              parameters.  The  only supported compression types allowed to be
              uniformly used are none, gzip and xz.

       --deb-format=format
              Set the archive format version used when  building  (since  dpkg
              1.17.0).   Allowed  values  are  2.0  for  the  new  format, and
              0.939000 for the old one (default is 2.0).

              The old archive format is less easily parsed by non-Debian tools
              and  is  now obsolete; its only use is when building packages to
              be parsed by versions of  dpkg  older  than  0.93.76  (September
              1995), which was released as i386 a.out only.

       --nocheck
              Inhibits   dpkg-deb  --build's  usual  checks  on  the  proposed
              contents of an archive. You can build any archive you  want,  no
              matter how broken, this way.

       -v, --verbose
              Enables verbose output (since dpkg 1.16.1).  This currently only
              affects --extract making it behave like --vextract.

       -D, --debug
              Enables debugging output. This is not very interesting.

EXIT STATUS
       0      The requested action was successfully performed.

       2      Fatal or unrecoverable error due to invalid command-line  usage,
              or  interactions  with  the  system,  such  as  accesses  to the
              database, memory allocations, etc.

ENVIRONMENT
       TMPDIR If set, dpkg-deb will use it as the directory in which to create
              temporary files and directories.

       SOURCE_DATE_EPOCH
              If  set,  it will be used as the timestamp (as seconds since the
              epoch) in the deb(5)'s ar(5) container and  used  to  clamp  the
              mtime in the tar(5) file entries.

NOTES
       Do  not  attempt to use just dpkg-deb to install software! You must use
       dpkg proper to ensure that all the files are correctly placed  and  the
       package's scripts run and its status and contents recorded.

BUGS
       dpkg-deb -I package1.deb package2.deb does the wrong thing.

       There  is  no authentication on .deb files; in fact, there isn't even a
       straightforward  checksum.   (Higher  level  tools  like  APT   support
       authenticating  .deb  packages  retrieved  from a given repository, and
       most packages nowadays provide an  md5sum  control  file  generated  by
       debian/rules.  Though this is not directly supported by the lower level
       tools.)

SEE ALSO
       deb(5), deb-control(5), dpkg(1), dselect(1).

1.18.24                           2017-05-17                       dpkg-deb(1)

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