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DEBDIFF(1)                           General Commands Manual                           DEBDIFF(1)

NAME
       debdiff - compare file lists in two Debian packages

SYNOPSIS
       debdiff [options]
       debdiff [options] ... deb1 deb2
       debdiff [options] ... changes1 changes2
       debdiff [options] ... --from deb1a deb1b ...  --to deb2a deb2b ...
       debdiff [options] ... dsc1 dsc2

DESCRIPTION
       debdiff  takes the names of two Debian package files (.debs or .udebs) on the command line
       and compares their contents (considering only the files in the main package, not the main-
       tenance scripts).  It shows which files have been introduced and which removed between the
       two package files, and is therefore useful for spotting files which may have been inadver-
       tently  lost between revisions of the package.  It also checks the file owners and permis-
       sions, and compares the control files of the two packages using the wdiff program.  If you
       want a deeper comparison of two Debian package files you can use the diffoscope tool.

       If  no arguments are given, debdiff tries to compare the content of the current source di-
       rectory with the last version of the package.

       debdiff can also handle changes between groups of .deb files in two ways.  The first is to
       specify two .changes files.  In this case, the .deb files listed in the .changes file will
       be compared, by taking the contents of all of the listed .deb files together.   (The  .deb
       files  listed  are  assumed to be in the same directory as the .changes file.)  The second
       way is to list the .deb files of interest specifically using the --from ...  --to  syntax.
       These  both  help if a package is broken up into smaller packages and one wishes to ensure
       that nothing is lost in the interim.

       debdiff examines the devscripts configuration files as described below.  Command line  op-
       tions override the configuration file settings, though.

       If  debdiff is passed two source packages (.dsc files) it will compare the contents of the
       source packages.  If the source packages differ only in Debian revision number  (that  is,
       the .orig.tar.gz files are the same in the two .dsc files), then interdiff(1) will be used
       to compare the two patch files if this program is available on  the  system,  otherwise  a
       diff will be performed between the two source trees.

OPTIONS
       --dirs, -d
              The default mode of operation is to ignore directory names which appear in the file
              list, but they, too, will be considered if this option is given.

       --nodirs
              Ignore directory names which appear in the file list.  This is the default  and  it
              can be used to override a configuration file setting.

       --move FROM TO, -m FROM TO
              It  sometimes occurs that various files or directories are moved around between re-
              visions.  This can be handled using this option.   There  are  two  arguments,  the
              first  giving  the  location of the directory or file in the first package, and the
              second in the second.  Any files in the first listing whose names  begin  with  the
              first  argument are treated as having that substituted for the second argument when
              the file lists are compared.  Any number of --move arguments may be given; they are
              processed  in  the  order  in which they appear. This only affects comparing binary
              packages, not source packages.

       --move-regex FROM TO
              This is the same as --move, except that FROM is treated as a regular expression and
              the  perl substitution command s/^FROM/TO/ is applied to the files.  In particular,
              TO can make use of backreferences such as $1.

       --nocontrol
              debdiff will usually compare the respective control files of the packages using wd-
              iff(1).  This option suppresses this part of the processing.

       --control
              Compare  the  respective  control files; this is the default, and it can be used to
              override a configuration file setting.

       --controlfiles FILE[,FILE ...]
              Specify which control files to compare; by default this is just control, but  could
              include  postinst,  config  and  so  on.   Files  will only be compared if they are
              present in both .debs being compared.  The special value ALL compares  all  control
              files  present  in  both  packages, except for md5sums.  This option can be used to
              override a configuration file setting.

       --wdiff-source-control
              When processing source packages, compare control files using wdiff.  Equivalent  to
              the --control option for binary packages.

       --no-wdiff-source-control
              Do not compare control files in source packages using wdiff.  This is the default.

       --wp, --wl, --wt
              Pass  a  -p,  -l  or -t option to wdiff respectively.  (This yields the whole wdiff
              output rather than just the lines with any changes.)

       --show-moved
              If multiple .deb files are specified on the command  line,  either  using  .changes
              files  or  the  --from/--to syntax, then this option will also show which files (if
              any) have moved between packages.  (The package names are  simply  determined  from
              the names of the .deb files.)

       --noshow-moved
              The default behaviour; can be used to override a configuration file setting.

       --renamed FROM TO
              If  --show-moved  is being used and a package has been renamed in the process, this
              command instructs debdiff to treat the package in the first list called FROM as  if
              it were called TO.  Multiple uses of this option are permitted.

       --exclude PATTERN
              Exclude files whose basenames match PATTERN.  Multiple uses of this option are per-
              mitted.  Note that this option is passed on to diff and has the same behaviour,  so
              only  the  basename  of  the file is considered: in particular, --exclude='*.patch'
              will work, but --exclude='debian/patches/*' will have no practical effect.

       --diffstat
              Include the result of diffstat before the generated diff.

       --no-diffstat
              The default behaviour; can be used to override a configuration file setting.

       --auto-ver-sort
              When comparing source packages, do so in version order.

       --no-auto-ver-sort
              Compare source packages in the order they were passed on the command-line, even  if
              that  means comparing a package with a higher version against one with a lower ver-
              sion.  This is the default behaviour.

       --unpack-tarballs
              When comparing source packages, also unpack tarballs found in the top level  source
              directory  to  compare  their contents along with the other files.  This is the de-
              fault behaviour.

       --no-unpack-tarballs
              Do not unpack tarballs inside source packages.

       --apply-patches
              If the old and/or new package is in 3.0 (quilt) format,  apply  the  quilt  patches
              (and remove .pc/) before comparison.

       --no-apply-patches, --noapply-patches
              If  the  old  and/or  new  package is in 3.0 (quilt) format, do not apply the quilt
              patches before comparison. This is the default behaviour.

       --no-conf, --noconf
              Do not read any configuration files.  This can only be used  as  the  first  option
              given on the command-line.

       --debs-dir directory
              Look for the .dsc files in directory instead of the parent of the source directory.
              This should either be an absolute path or relative to the top of the source  direc-
              tory.

       --help, -h
              Show a summary of options.

       --version, -v
              Show version and copyright information.

       --quiet, -q
              Be quiet if no differences were found.

       --ignore-space, -w
              Ignore whitespace in diffs.

CONFIGURATION VARIABLES
       The  two configuration files /etc/devscripts.conf and ~/.devscripts are sourced by a shell
       in that order to set configuration variables.  Command line options can be used  to  over-
       ride configuration file settings.  Environment variable settings are ignored for this pur-
       pose.  The currently recognised variables are:

       DEBDIFF_DIRS
              If this is set to yes, then it is the same as the --dirs command line parameter be-
              ing used.

       DEBDIFF_CONTROL
              If this is set to no, then it is the same as the --nocontrol command line parameter
              being used.  The default is yes.

       DEBDIFF_CONTROLFILES
              Which control files to compare, corresponding to the  --controlfiles  command  line
              option.  The default is control.

       DEBDIFF_SHOW_MOVED
              If this is set to yes, then it is the same as the --show-moved command line parame-
              ter being used.

       DEBDIFF_WDIFF_OPT
              This option will be passed to wdiff; it should be one of -p, -l or -t.

       DEBDIFF_SHOW_DIFFSTAT
              If this is set to yes, then it is the same as the --diffstat command line parameter
              being used.

       DEBDIFF_WDIFF_SOURCE_CONTROL
              If  this  is  set to yes, then it is the same as the --wdiff-source-control command
              line parameter being used.

       DEBDIFF_AUTO_VER_SORT
              If this is set to yes, then it is the same as the --auto-ver-sort command line  pa-
              rameter being used.

       DEBDIFF_UNPACK_TARBALLS
              If  this is set to no, then it is the same as the --no-unpack-tarballs command line
              parameter being used.

       DEBDIFF_APPLY_PATCHES
              If this is set to yes, then it is the same as the --apply-patches command line  pa-
              rameter being used.  The default is no.

       DEBRELEASE_DEBS_DIR
              This specifies the directory in which to look for the .dsc and files, and is either
              an absolute path or relative to the top of the source tree.   This  corresponds  to
              the  --debs-dir command line option.  This directive could be used, for example, if
              you always use pbuilder or svn-buildpackage to build your packages.  Note  that  it
              also affects debrelease(1) in the same way, hence the strange name of the option.

EXIT VALUES
       Normally  the  exit  value  will  be 0 if no differences are reported and 1 if any are re-
       ported.  If there is some fatal error, the exit code will be 255.

SEE ALSO
       debdiff-apply(1), diffstat(1), dpkg-deb(1),  interdiff(1),  wdiff(1),  devscripts.conf(5),
       diffoscope(1)

AUTHOR
       debdiff  was  originally  written as a shell script by Yann Dirson <dirson AT debian.org> and
       rewritten in Perl with many more features by Julian Gilbey <jdg AT debian.org>.  The software
       may  be  freely redistributed under the terms and conditions of the GNU General Public Li-
       cense, version 2.

DEBIAN                                   Debian Utilities                              DEBDIFF(1)

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