Provided by: tar_1.20-1_i386 bug


       tar - The GNU version of the tar archiving utility


       tar  [ - ] A --catenate --concatenate | c --create | d --diff --compare
       | --delete | r --append | t --list | u --update | x --extract  --get  [
       options ] pathname [ pathname ... ]


       This  manual  page  documents  the  GNU  version  of tar , an archiving
       program designed to store and extract files from an archive file  known
       as  a  tarfile.   A tarfile may be made on a tape drive, however, it is
       also common to write a tarfile to a normal file.  The first argument to
       tar  must  be  one  of  the  options: Acdrtux, followed by any optional
       functions.  The final arguments to tar are the names of  the  files  or
       directories  which  should  be  archived.  The  use of a directory name
       always implies that the subdirectories below should be included in  the


       tar -xvvf foo.tar
              extract foo.tar

       tar -xvvzf foo.tar.gz
              extract gzipped foo.tar.gz

       tar -cvvf foo.tar foo/
              tar contents of folder foo in foo.tar


       One of the following options must be used:

       -A, --catenate, --concatenate
              append tar files to an archive

       -c, --create
              create a new archive

       -d, --diff, --compare
              find differences between archive and file system

              delete from the archive (not for use on mag tapes!)

       -r, --append
              append files to the end of an archive

       -t, --list
              list the contents of an archive

       -u, --update
              only append files that are newer than copy in archive

       -x, --extract, --get
              extract files from an archive


              re-enable  handling  of  GNUTYPE_NAMES  which is now disabled by

              force exclusion patterns to match initial subsequences

              don’t change access times on dumped files

       -a, --auto-compress
              with --create,  selects  compression  algorithm  basing  on  the
              suffix of the archive file name

       -b, --blocking-factor N
              use record size of Nx512 bytes (default N=20)

       -B, --read-full-records
              reblock as we read (for reading 4.2BSD pipes)

              back  up  files instead of overwriting (TYPE=numbered, existing,

       -C, --directory DIR
              change to directory DIR

              print periodic checkpoints

              this action allows to specify an  action  to  be  executed  upon
              hitting  a  checkpoint.   Recognized actions are: dot, echo (the
              default),   echo=string,   ttyout=string,   exec=cmdline,    and
              sleep=value.  Any number of ‘--checkpoint-action’ options can be
              specified, the actions  will  be  executed  in  order  of  their
              appearance in the command line.

              enables comparing device numbers.  This is the default.

              disables comparing device numbers during preparatory stage of an
              incremental dump.  This allows to avoid creating full  dumps  if
              the device numbers change (e.g. when using an LVM snapshot)

              exclude files matching PATTERN

       -f, --file [HOSTNAME:]F
              use   archive   file  or  device  F  (otherwise  value  of  TAPE
              environment variable; if unset, "-", meaning stdin/stdout)

       -F, --info-script F, --new-volume-script F
              run script at end of each tape (implies -M)

              archive file is local even if it has a colon

       -G, --incremental
              create/list/extract old GNU-format incremental backup

       -g, --listed-incremental F
              create/list/extract new GNU-format incremental backup

       --group G
              set group to G while adding files

       -h, --dereference
              don’t dump symlinks; dump the files they point to

              during archive creation, dereferences hard links and stores  the
              files they refer to, instead of creating usual hard link members
              (type ’1’)

       --help print help message

       -i, --ignore-zeros
              ignore blocks of zeros in archive (normally mean EOF)

              ignore case when excluding files

              don’t exit with non-zero status on unreadable files

       -j, --bzip2
              filter archive through bzip2,  use  to  decompress  .bz2  files.
              WARNING:  some previous versions of tar used option -I to filter
              through bzip2.  When writing scripts, use --bzip2 instead of  -j
              so that both older and newer tar versions will work.

       -k, --keep-old-files
              keep existing files; don’t overwrite them from archive

       -K, --starting-file F
              begin at file F in the archive

       --lzma selects LZMA compression algorithm

       -l, --check-links
              print a message if not all links are dumped

       -L, --tape-length N
              change tapes after writing N*1024 bytes

       -m, --touch
              don’t extract file modified time

       --transform expr
              applies  filename  transformations.  The argument to this option
              can be a list of replace expressions, separated by semicolon (as
              in  ‘sed’).   Filename  transformations  are applied to symbolic
              link targets during both creation and extraction.   This  option
              may   be   specified   any   number   of  times,  the  specified
              transofrmations will be applied in turn.

       -M, --multi-volume
              create/list/extract multi-volume archive

       --mode M
              set permissions to M while adding files

       -N, --after-date DATE, --newer DATE
              only store files newer than DATE

       --newer-mtime DATE
              only store files whose contents have changed after DATE

              allow exclusion patterns to match any substring (the default)

              match patterns case sensitively (the default)

              do not recurse into subdirectories

       -o, --no-same-owner
              extract files with owner set to current user  (the  default  for
              non-root users)

              apply umask to extracted files (the default for non-root users)

              do not use wildcards when excluding files

              don’t let wildcards match "/" when excluding files

       --null for -T, use "NUL" instead of newline as filename terminator

              always use numbers for user/group names

       --old-archive, --portability
              write  a  V7  format  archive,  rather  than ANSI format.  These
              options are deprecated, please use --format=v7 instead.

              stay in local file system when creating an archive

       --owner O
              set owner to O while adding files

       -O, --to-stdout
              extract files to standard output

       -p, --same-permissions, --preserve-permissions
              ignore umask when extracting files (the default for root)

       -P, --absolute-names
              don’t strip leading ‘/’s from file names

              create POSIX compliant  archive.   This  option  is  deprecated,
              please use --format=posix instead.

              like -p -s

       -R, --block-number
              show block number within archive with each message

       --record-size SIZE
              use SIZE bytes per record

              recurse into directories (the default)

              remove existing directories before extracting directories of the
              same name

              remove files after adding them to the archive

              Use remote COMMAND instead of ‘rsh’.  This option exists so that
              people  who use something other than the standard ‘rsh’ (e.g., a
              Kerberized ‘rsh’) can access a remote device.

       -S, --sparse
              handle sparse files efficiently

       -s, --same-order, --preserve-order
              list of names to extract is sorted to match archive

              extract files with owner as specified in  archive  (the  default
              for root)

              mention directories that are being skipped over

       --strip-components n
              Strip the given number of leading directory components

       --strip, --strip-components N
              Strips  the  first  N components from archive members’ pathnames
              when unpacking.

       --suffix SUFFIX
              append SUFFIX to make backup files (default ~)

       -T, --files-from F
              get names to extract or archive from file F

              display total bytes written after creating an archive

       -U, --unlink-first
              unlink & recreate files instead of overwriting

       --use-compress-program PROG
              filter the archive through PROG (which must accept -d)

       -v, --verbose
              verbosely list files processed

       -V, --label NAME
              create archive with volume name NAME

              print tar program version number

       --volno-file F
              keep track of current volume (of a multi-volume archive) in F

       -w, --interactive, --confirmation
              ask for confirmation for every action

       -W, --verify
              attempt to verify the archive after writing it

              use wildcards when excluding files (the default)

              allow wildcards to match "/" (the default)

       -X, --exclude-from=FILE
              exclude files matching patterns listed in FILE

       -Z, --compress, --uncompress
              filter the archive through compress

       -z, --gzip, --gunzip, --ungzip
              filter the archive through gzip

              specify drive and density


       The  behavior  of  tar  is  controlled  by  the  following  environment
       variables, among others:

       TAPE   Device  or  file  to  use  for  the  archive  if  --file  is not
              specified.  If this environment variable is unset, use stdin  or
              stdout instead.

              Options  to  prepend  to  those  specified  on the command line,
              separated by whitespace.  Embedded backslashes may  be  used  to
              escape whitespace or backslashes within an option.

       In addition, the value of the blocking factor is made available to info
       and checkpoint scripts via environment variable TAR_BLOCKING_FACTOR.


       The GNU folks, in general, abhor man pages, and create  info  documents
       instead.   Unfortunately,  the info document describing tar is licensed
       under the GFDL with invariant cover texts, which  violates  the  Debian
       Free  Software Guidelines.  As a result, the info documentation for tar
       is not included in the Debian package.

       If you want to read the complete  documentation  for  GNU  tar,  please
       refer to the online version at


       This  man  page  was  created for the Debian distribution.  It does not
       describe all of the functionality of tar, and it is often out of  date.
       Patches  to  improve  the coverage and/or accuracy of this man page are
       appreciated, and should be filed as wishlist severity bugs against  the
       Debian tar package, not submitted to the GNU tar maintainers.

                                  29 Aug 2007                           TAR(1)