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Unix Manual [tar]

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UNIX Manual | Commands
							TAR(1)				 User Commands				TAR(1)

       tar - manual page for tar 1.23

       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.

	      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

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

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

       -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 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
	      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

	      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

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

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

	      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

       -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:

       --acls Save the ACLs to the archive

	      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

	      force (symbolic) mode CHANGES for added files

	      set mtime for added files from DATE-OR-FILE

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

	      Don't extract the ACLs from the archive

	      cancel the effect of --delay-directory-restore option

	      extract files as yourself (default for ordinary users)

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

	      Don't extract the SELinux context from the archive

	      Don't extract the user/root xattrs from the archive

	      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

	      Save the SELinux context to the archive

	      Save the user/root xattrs to the archive

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

	      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

	      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

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


	      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

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

	      exclude version control system directories

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

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

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

	      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

	      ignore case

	      patterns match after any '/' (default for exclusion)

	      case sensitive matching (default)

	      verbatim string matching

	      wildcards do not match '/'

	      use wildcards (default)

	      wildcards match '/' (default for exclusion)

Informative output:
	      display progress messages every NUMBERth record (default 10)

	      execute ACTION on each checkpoint

	      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

       -v, --verbose
	      verbosely list files processed

	      warning control

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

Compatibility options:
       -o     when  creating,  same as --old-archive; when extracting, same as

Other options:
       -?, --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

       *This*  tar  defaults  to: --format=gnu -f- -b20 --quoting-style=escape
       --rmt-command=/sbin/rmt --rsh-command=/usr/bin/rsh

       Written by John Gilmore and Jay Fenlason.

       Report bugs to <>.

       Copyright (C) 2010 Free Software Foundation, Inc.   License  GPLv3+:  GNU
       GPL version 3 or later <>.
       This  is	 free  software:  you  are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

tar 1.23			  March 2012				TAR(1)							
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