tar [OPTION...] [FILE]...


       GNU `tar' saves many files together into a single tape or disk archive,
       and can restore individual files from the archive.

       Note that this manual page contains just  very  brief  description  (or
       more like a list of possible functionality) originally generated by the
       help2man utility.  The full documentation for tar is  maintained  as  a
       Texinfo manual.  If the info and tar programs are properly installed at
       your site, the command `info tar' should give you access  to  the  com-
       plete manual.


       tar -cf archive.tar foo bar
              # Create archive.tar from files foo and bar.

       tar -tvf archive.tar
              # List all files in archive.tar verbosely.

       tar -xf archive.tar
              # Extract all files from archive.tar.


       *This* tar installation defaults to:

       --format=gnu  -f-  -b20  --quoting-style=escape --rmt-command=/sbin/rmt

Main operation mode:

       -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 on mag tapes!)

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

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

              test the archive volume label and exit

              filter the archive through bzip2

        -J, --xz
              filter the archive through xz

       -p, --preserve-permissions
              extract  information  about  file permissions (default for supe-

       -v, --verbose
              verbosely list files processed

       -z, --gzip
              filter the archive through gzip

Operation modifiers:

              check   device   numbers   when  creating  incremental  archives

       -g, --listed-incremental=FILE
              handle new GNU-format incremental backup

       -G, --incremental
              handle old GNU-format incremental backup

              do not exit with nonzero on unreadable files

              dump level for created listed-incremental archive

       -n, --seek
              archive is seekable

              do not check device numbers when creating incremental archives

              archive is not seekable

              process only the NUMBERth occurrence of each  file  in  the  ar-
              chive;  this option is valid only in conjunction with one of the
              subcommands --delete, --diff, --extract or  --list  and  when  a
              list  of files is given either on the command line or via the -T
              option; NUMBER defaults to 1

              set version of the sparse format to use (implies --sparse)

              preserve metadata of existing directories

              overwrite existing files when extracting

              overwrite  metadata  of  existing  directories  when  extracting

              empty hierarchies prior to extracting directory

              remove files after adding them to the archive

              don't replace existing files when extracting, silently skip over

       -U, --unlink-first
              remove each file prior to extracting over it

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

Select output stream:

       --ignore-command-error ignore exit codes of children

              treat non-zero exit codes of children as error

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

              pipe extracted files to another program

Handling of file attributes:

              preserve access times on dumped files, either by  restoring  the
              times  after  reading (METHOD='replace'; default) or by not set-
              ting the times in the first place (METHOD='system')

              delay setting modification times and  permissions  of  extracted
              directories until the end of extraction

              force NAME as group for added files

              apply  the user's umask when extracting permissions from the ar-
              chive (default for ordinary users)

              always use numbers for user/group names

              force NAME as owner for added files

       -p, --preserve-permissions, --same-permissions
              extract information about file permissions  (default  for  supe-

              same as both -p and -s

              try  extracting  files  with the same ownership as exists in the
              archive (default for superuser)

       -s, --preserve-order, --same-order
              sort names to extract to match archive

Handling of extended file attributes:

       --acls Enable the POSIX ACLs support

              Disable the POSIX ACLs support

              Disable the SELinux context support

              Disable extended attributes support

              Enable the SELinux context support

              Enable extended attributes support

              specify the exclude pattern for xattr keys

              specify the include pattern for xattr keys

Device selection and switching:

       -f, --file=ARCHIVE
              use archive file or device ARCHIVE
              use given rmt COMMAND instead of rmt

              use remote COMMAND instead of rsh

              use/update the volume number in FILE

Device blocking:

       -b, --blocking-factor=BLOCKS
              BLOCKS x 512 bytes per record

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

       -i, --ignore-zeros
              ignore zeroed blocks in archive (means EOF)

              NUMBER of bytes per record, multiple of 512

Archive format selection:

       -H, --format=FORMAT
              create archive of the given format

              FORMAT is one of the following:

                     gnu    GNU tar 1.13.x format

                     oldgnu GNU format as per tar <= 1.12

                     pax    POSIX 1003.1-2001 (pax) format

                     posix  same as pax

                     ustar  POSIX 1003.1-1988 (ustar) format

                     v7     old V7 tar format

       --old-archive, --portability
              same as --format=v7

              control pax keywords

              same as --format=posix

       -V, --label=TEXT
              create archive with volume name TEXT; at list/extract time,  use
              TEXT as a globbing pattern for volume name

       --lzma filter the archive through lzma


              do not use archive suffix to determine the compression program

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

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

       Note:   You   might   need  to  install  external  program  (lzip/ncom-
       press/lzma...) to use some of these compression options

Local file selection:

              add given FILE to the archive (useful if its name starts with  a

              backup before removal, choose version CONTROL

       -C, --directory=DIR
              change to directory DIR

              exclude files, given as a PATTERN

              exclude backup and lock files

              exclude  contents of directories containing CACHEDIR.TAG, except
              for the tag file itself

              exclude directories containing CACHEDIR.TAG

       --exclude-caches-under exclude everything under directories containing

              exclude contents of directories containing FILE, except for FILE

       --exclude-tag-all=FILE exclude directories containing FILE

              exclude everything under directories containing FILE
              compare date and time when data changed only

              disable the effect of the previous --null option

              avoid descending automatically in directories

              do not unquote filenames read with -T

       --null                 -T reads null-terminated names, disable -C

       -N, --newer=DATE-OR-FILE, --after-date=DATE-OR-FILE
              only store files newer than DATE-OR-FILE

              stay in local file system when creating archive

       -P, --absolute-names
              don't strip leading `/'s from file names

              recurse into directories (default)

              backup  before  removal, override usual suffix ('~' unless over-
              ridden by environment variable SIMPLE_BACKUP_SUFFIX)

       -T, --files-from=FILE
              get names to extract or create from FILE

              unquote filenames read with -T (default)

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

File name transformations:

              strip NUMBER leading components from file names on extraction

       --transform=EXPRESSION, --xform=EXPRESSION
              use sed replace EXPRESSION to transform file names

              File name matching options (affect both exclude and include pat-

              patterns match file name start

              use wildcards (default)

              wildcards match `/' (default for exclusion)

Informative output:

              display progress messages every NUMBERth record (default 10)

              execute ACTION on each checkpoint

              print file time to its full resolution

              send verbose output to FILE

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

              disable quoting for characters from STRING

              additionally quote characters from STRING

              set name quoting style; see below for valid STYLE values

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

              show tar defaults

              when  listing  or  extracting, list each directory that does not
              match search criteria

       --show-transformed-names, --show-stored-names
              show file or archive names after transformation

              print total bytes after processing the archive; with an argument
              -  print total bytes when this SIGNAL is delivered; Allowed sig-
              nals are: SIGHUP, SIGQUIT,  SIGINT,  SIGUSR1  and  SIGUSR2;  the
              names without SIG prefix are also accepted

       --utc  print file modification dates in UTC

       -?, --help
              give this help list

              disable use of some potentially harmful options

              give a short usage message

              print program version

       Mandatory or optional arguments to long options are also  mandatory  or
       optional for any corresponding short options.

       The   backup   suffix   is  `~',  unless  set  with  --suffix  or  SIM-
       PLE_BACKUP_SUFFIX.  The version control may be  set  with  --backup  or
       VERSION_CONTROL, values are:

       none, off
              never make backups

       t, numbered
              make numbered backups

       nil, existing
              numbered if numbered backups exist, simple otherwise

       never, simple
              always make simple backups

       Valid arguments for the --quoting-style option are:

              literal shell shell-always c c-maybe escape locale clocale


       Written by John Gilmore and Jay Fenlason.


       Report bugs to <bug-tar@gnu.org>.


       Copyright  (C) 2013 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

tar 1.26 February 2013 TAR(1)

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