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CPIO(1)			   OpenBSD Reference Manual		       CPIO(1)

NAME
     cpio - copy file archives in and out

SYNOPSIS
     cpio -o [-AaBcjLvZz] [-C bytes] [-F archive] [-H format] [-O archive]
	  < name-list [> archive]
     cpio -i [-6BbcdfjmrSstuvZz] [-C bytes] [-E file] [-F archive] [-H format]
	  [-I archive] [pattern ...] [< archive]
     cpio -p [-adLlmuv] destination-directory < name-list

DESCRIPTION
     The cpio command copies files to and from a cpio archive.

     The options are as follows:

     -o	     Create an archive.	 Reads the list of files to store in the
	     archive from standard input, and writes the archive on standard
	     output.

	     -A	     Append to the specified archive.

	     -a	     Reset the access times on files that have been copied to
		     the archive.

	     -B	     Set block size of output to 5120 bytes.

	     -C bytes
		     Set the block size of output to bytes.

	     -c	     Use ASCII format for cpio header for portability.

	     -F archive
		     Use the specified file as the input for the archive.

	     -H format
		     Write the archive in the specified format.	 Recognized
		     formats are:

		     bcpio    Old binary cpio format.
		     cpio     Old octal character cpio format.
		     sv4cpio  SVR4 hex cpio format.
		     tar      Old tar format.
		     ustar    POSIX ustar format.

	     -j	     Compress archive using the bzip2 format.  The bzip2
		     utility must be installed separately.

	     -L	     Follow symbolic links.

	     -O archive
		     Use the specified file name as the archive to write to.

	     -v	     Be verbose about operations.  List filenames as they are
		     written to the archive.

	     -Z	     Compress archive using compress(1) format.

	     -z	     Compress archive using gzip(1) format.

     -i	     Restore files from an archive.  Reads the archive file from
	     standard input and extracts files matching the patterns that were
	     specified on the command line.

	     -6	     Process old-style cpio format archives.

	     -B	     Set the block size of the archive being read to 5120
		     bytes.

	     -b	     Do byte and word swapping after reading in data from the
		     archive, for restoring archives created on systems with a
		     different byte order.

	     -C bytes
		     Read archive written with a block size of bytes.

	     -c	     Expect the archive headers to be in ASCII format.

	     -d	     Create any intermediate directories as needed during
		     restore.

	     -E file
		     Read list of file name patterns to extract or list from
		     file.

	     -F archive, -I archive
		     Use the specified file as the input for the archive.

	     -f	     Restore all files except those matching the patterns
		     given on the command line.

	     -H format
		     Read an archive of the specified format.  Recognized
		     formats are:

		     bcpio    Old binary cpio format.
		     cpio     Old octal character cpio format.
		     sv4cpio  SVR4 hex cpio format.
		     tar      Old tar format.
		     ustar    POSIX ustar format.

	     -j	     Uncompress archive using the bzip2 format.	 The bzip2
		     utility must be installed separately.

	     -m	     Restore modification times on files.

	     -r	     Rename restored files interactively.

	     -S	     Swap words after reading data from the archive.

	     -s	     Swap bytes after reading data from the archive.

	     -t	     Only list the contents of the archive, no files or
		     directories will be created.

	     -u	     Overwrite files even when the file in the archive is
		     older than the one that will be overwritten.

	     -v	     Be verbose about operations.  List filenames as they are
		     copied in from the archive.

	     -Z	     Uncompress archive using compress(1) format.

	     -z	     Uncompress archive using gzip(1) format.

     -p	     Copy files from one location to another in a single pass.	The
	     list of files to copy are read from standard input and written
	     out to a directory relative to the specified directory argument.

	     -a	     Reset the access times on files that have been copied.

	     -d	     Create any intermediate directories as needed to write
		     the files at the new location.

	     -L	     Follow symbolic links.

	     -l	     When possible, link files rather than creating an extra
		     copy.

	     -m	     Restore modification times on files.

	     -u	     Overwrite files even when the original file being copied
		     is older than the one that will be overwritten.

	     -v	     Be verbose about operations.  List filenames as they are
		     copied.

ENVIRONMENT
     TMPDIR	 Path in which to store temporary files.

EXIT STATUS
     The cpio utility exits with one of the following values:

	   0	   All files were processed successfully.
	   1	   An error occurred.

DIAGNOSTICS
     Whenever cpio cannot create a file or a link when extracting an archive
     or cannot find a file while writing an archive, or cannot preserve the
     user ID, group ID, file mode, or access and modification times when the
     -p option is specified, a diagnostic message is written to standard error
     and a non-zero exit value will be returned, but processing will continue.
     In the case where cpio cannot create a link to a file, cpio will not
     create a second copy of the file.

     If the extraction of a file from an archive is prematurely terminated by
     a signal or error, cpio may have only partially extracted the file the
     user wanted.  Additionally, the file modes of extracted files and
     directories may have incorrect file bits, and the modification and access
     times may be wrong.

     If the creation of an archive is prematurely terminated by a signal or
     error, cpio may have only partially created the archive, which may
     violate the specific archive format specification.

SEE ALSO
     pax(1), tar(1)

AUTHORS
     Keith Muller at the University of California, San Diego.

CAVEATS
     Different file formats have different maximum file sizes.	It is
     recommended that a format such as cpio or ustar be used for larger files.

	   File format	  Maximum file size
	   bcpio	  4 Gigabytes
	   sv4cpio	  4 Gigabytes
	   cpio		  8 Gigabytes
	   tar		  8 Gigabytes
	   ustar	  8 Gigabytes

BUGS
     The -s and -S options are currently not implemented.

OpenBSD 4.9		       January 23, 2011			   OpenBSD 4.9
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