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TAR(1)			    General Commands Manual			TAR(1)

NAME
       tar - archiver

SYNOPSIS
       tar key [ file ...  ]

DESCRIPTION
       Tar  saves and restores file trees.  It is most often used to transport
       a tree of files from one	system to another.  The	key is a  string  that
       contains	 at  most  one function	letter plus optional modifiers.	 Other
       arguments to the	command	are names of files or directories to be	dumped
       or restored.  A directory name implies all the contained	files and sub-
       directories (recursively).

       The function is one of the following letters:

       c      Create a new archive with	the given files	as contents.

       r      The named	files are appended to the archive.

       t      List all occurrences of each file	in  the	 archive,  or  of  all
	      files if there are no file arguments.

       x      Extract the named	files from the archive.	 If a file is a	direc-
	      tory, the	directory is extracted	recursively.   Modes  are  re-
	      stored  if  possible.  If	no file	argument is given, extract the
	      entire archive.  If the archive contains multiple	entries	for  a
	      file, the	latest one wins.

       The modifiers are:

       f      Use  the next argument as	the name of the	archive	instead	of the
	      default standard input (for keys x and  t)  or  standard	output
	      (for keys	c and r).

       g      Use the next (numeric) argument as the group id for files	in the
	      output archive.

       k      (keep) Modifies the behavior of x	not to extract files which al-
	      ready exist.

       m      Do  not  set  the	modification time on extracted files.  This is
	      the default behavior; the	flag  exists  only  for	 compatibility
	      with other tars.

       p      Create  archive  in POSIX	ustar format, which raises the maximum
	      pathname length from 100	to  256	 bytes.	  Ustar	 archives  are
	      recognised  automatically	by tar when reading archives.  This is
	      the default behavior; the	flag exists only for backwards compat-
	      ibility with older versions of tar.

       P      Do not generate the POSIX	ustar format.

       R      When  extracting,	 ignore	leading	slash on file names, i.e., ex-
	      tract all	files relative to the current directory.

       T      Modifies the behavior of x to set	the modified time of each file
	      to that specified	in the archive.

       u      Use  the next (numeric) argument as the user id for files	in the
	      output archive.  This is only useful when	moving files to	a non-
	      Plan 9 system.

       v      (verbose)	 Print	the  name of each file treated preceded	by the
	      function letter.	With t,	give more details  about  the  archive
	      entries.

       z      Operate  on compressed tar archives.  The	type of	compression is
	      inferred from the	file name extension:  for  .tar.gz  and	 .tgz;
	      bzip2  (see for .tar.bz, .tbz, .tar.bz2, and .tbz2; compress for
	      .tar.Z and .tz.  If no extension matches,	gzip is	used.	The  z
	      flag  is	unnecessary (but allowed) when using the t and x verbs
	      on archives with recognized extensions.

EXAMPLES
       Tar can be used to copy hierarchies thus:

	      @{cd fromdir && tar cp .}	| @{cd todir &&	tar xT}

SOURCE
       /src/cmd/tar.c

SEE ALSO
       9ar in

BUGS
       There is	no way to ask for any but the last occurrence of a file.

       File path names are limited to 100 characters  (256  when  using	 ustar
       format).

       The  tar	 format	allows specification of	links and symbolic links, con-
       cepts foreign to	Plan 9:	they are ignored.

									TAR(1)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SOURCE | SEE ALSO | BUGS

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