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TAR(1)                                    User Commands                                    TAR(1)



NAME
       tar - manual page for tar 1.26

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

DESCRIPTION
       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 documenta-
       tion 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 complete man-
       ual.

EXAMPLES
       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.

DEFAULTS
       *This* tar installation defaults to:

       --format=gnu   -f-   -b20   --quoting-style=escape   --rmt-command=/sbin/rmt    --rsh-com-
       mand=/usr/bin/rsh

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
              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-label
              test the archive volume label and exit

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

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

Common options:
       -C, --directory=DIR
              change to directory DIR

       -f, --file=ARCHIVE
              use archive file or device ARCHIVE

       -j, --bzip2
              filter the archive through bzip2

        -J, --xz
              filter the archive through xz

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

       -v, --verbose
              verbosely list files processed

       -z, --gzip
              filter the archive through gzip


Operation modifiers:
       --check-device
              check device numbers when creating incremental archives (default)

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

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

       --ignore-failed-read
              do not exit with nonzero on unreadable files

       --level=NUMBER
              dump level for created listed-incremental archive

       -n, --seek
              archive is seekable

       --no-check-device
              do not check device numbers when creating incremental archives

       --no-seek
              archive is not seekable

       --occurrence[=NUMBER]
              process  only  the  NUMBERth occurrence of each file in the archive; 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

       --sparse-version=MAJOR[.MINOR]
              set version of the sparse format to use (implies --sparse)

       -S, --sparse
              handle sparse files efficiently

Overwrite control:
       -k, --keep-old-files
              don't replace existing files when extracting, treat them as errors

       --keep-newer-files
              don't replace existing files that are newer than their archive copies

       --no-overwrite-dir
              preserve metadata of existing directories

       --overwrite
              overwrite existing files when extracting

       --overwrite-dir
              overwrite metadata of existing directories when extracting (default)

       --recursive-unlink
              empty hierarchies prior to extracting directory

       --remove-files
              remove files after adding them to the archive

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

       -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

       --no-ignore-command-error
              treat non-zero exit codes of children as error

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

       --to-command=COMMAND
              pipe extracted files to another program

Handling of file attributes:
       --atime-preserve[=METHOD]
              preserve access times on dumped files, either by restoring the times after  reading
              (METHOD='replace';  default)  or  by  not  setting  the  times  in  the first place
              (METHOD='system')

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

       --group=NAME
              force NAME as group for added files

       --mode=CHANGES
              force (symbolic) mode CHANGES for added files

       --mtime=DATE-OR-FILE
              set mtime for added files from DATE-OR-FILE

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

       --no-delay-directory-restore
              cancel the effect of --delay-directory-restore option

       --no-same-owner
              extract files as yourself (default for ordinary users)

       --no-same-permissions
              apply  the  user's  umask when extracting permissions from the archive (default for
              ordinary users)

       --numeric-owner
              always use numbers for user/group names

       --owner=NAME
              force NAME as owner for added files

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

       --preserve
              same as both -p and -s

       --same-owner
              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

       --no-acls
              Disable the POSIX ACLs support

       --no-selinux
              Disable the SELinux context support

       --no-xattrs
              Disable extended attributes support

       --selinux
              Enable the SELinux context support

       --xattrs
              Enable extended attributes support

       --xattrs-exclude=MASK
              specify the exclude pattern for xattr keys

       --xattrs-include=MASK
              specify the include pattern for xattr keys

Device selection and switching:
       -f, --file=ARCHIVE
              use archive file or device ARCHIVE

       --force-local
              archive file is local even if it has a colon

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

       -L, --tape-length=NUMBER
              change tape after writing NUMBER x 1024 bytes

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

       --rmt-command=COMMAND
              use given rmt COMMAND instead of rmt

       --rsh-command=COMMAND
              use remote COMMAND instead of rsh

       --volno-file=FILE
              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)

       --record-size=NUMBER
              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

       --pax-option=keyword[[:]=value][,keyword[[:]=value]]...
              control pax keywords

       --posix
              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

Compression options:
       -a, --auto-compress
              use archive suffix to determine the compression program

       -I, --use-compress-program=PROG
              filter through PROG (must accept -d)

       -j, --bzip2
              filter the archive through bzip2

       -J, --xz
              filter the archive through xz

       --lzip filter the archive through lzip

       --lzma filter the archive through lzma

       --lzop

       --no-auto-compress
              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/ncompress/lzma...) to use  some  of
       these compression options

Local file selection:
       --add-file=FILE
              add given FILE to the archive (useful if its name starts with a dash)

       --backup[=CONTROL]
              backup before removal, choose version CONTROL

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

       --exclude=PATTERN
              exclude files, given as a PATTERN

       --exclude-backups
              exclude backup and lock files

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

       --exclude-caches-all
              exclude directories containing CACHEDIR.TAG

       --exclude-caches-under exclude everything under directories containing
              CACHEDIR.TAG

       --exclude-tag=FILE
              exclude contents of directories containing FILE, except for FILE itself

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

       --exclude-tag-under=FILE
              exclude everything under directories containing FILE

       --exclude-vcs
              exclude version control system directories

       -h, --dereference
              follow symlinks; archive and dump the files they point to

       --hard-dereference
              follow hard links; archive and dump the files they refer to

       -K, --starting-file=MEMBER-NAME
              begin at member MEMBER-NAME in the archive

       --newer-mtime=DATE
              compare date and time when data changed only

       --no-null
              disable the effect of the previous --null option

       --no-recursion
              avoid descending automatically in directories

       --no-unquote
              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

       --one-file-system
              stay in local file system when creating archive

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

       --recursion
              recurse into directories (default)

       --suffix=STRING
              backup before removal, override usual suffix ('~' unless overridden by  environment
              variable SIMPLE_BACKUP_SUFFIX)

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

       --unquote
              unquote filenames read with -T (default)

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

File name transformations:
       --strip-components=NUMBER
              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 patterns):

       --anchored
              patterns match file name start

       --ignore-case
              ignore case

       --no-anchored
              patterns match after any `/' (default for exclusion)

       --no-ignore-case
              case sensitive matching (default)

       --no-wildcards
              verbatim string matching

       --no-wildcards-match-slash
              wildcards do not match `/'

       --wildcards
              use wildcards (default)

       --wildcards-match-slash
              wildcards match `/' (default for exclusion)

Informative output:
       --checkpoint[=NUMBER]
              display progress messages every NUMBERth record (default 10)

       --checkpoint-action=ACTION
              execute ACTION on each checkpoint

       --full-time
              print file time to its full resolution

       --index-file=FILE
              send verbose output to FILE

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

       --no-quote-chars=STRING
              disable quoting for characters from STRING

       --quote-chars=STRING
              additionally quote characters from STRING

       --quoting-style=STYLE
              set name quoting style; see below for valid STYLE values

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

       --show-defaults
              show tar defaults

       --show-omitted-dirs
              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

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

       --utc  print file modification dates in UTC

       -v, --verbose
              verbosely list files processed

       --warning=KEYWORD
              warning control

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

Compatibility options:
       -o     when creating, same as --old-archive; when extracting, same as --no-same-owner

Other options:
       -?, --help
              give this help list

       --restrict
              disable use of some potentially harmful options

       --usage
              give a short usage message

       --version
              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 SIMPLE_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

AUTHOR
       Written by John Gilmore and Jay Fenlason.

REPORTING BUGS
       Report bugs to <bug-tar AT gnu.org>.

COPYRIGHT
       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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