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3.3 Copy-pass mode

In copy-pass mode, cpio copies files from one directory tree to another, combining the copy-out and copy-in steps without actually using an archive. It reads the list of files to copy from the standard input; the directory into which it will copy them is given as a non-option argument.

This mode is requested by the ‘-p’ (‘--pass-through’) command line option.

The following options are valid in copy-out mode:

-0
--null

Filenames in the list are delimited by ASCII null characters instead of newlines.

-a
--reset-access-time

Reset the access times of files after reading them.

-b
--swap

Swap both halfwords of words and bytes of halfwords in the data. Equivalent to ‘-sS’.

--block-size=block-size

Sets the I/O block size to block-size * 512 bytes.

-B

Set the I/O block size to 5120 bytes.

-c

Use the old portable (ASCII) archive format.

-C number
--io-size=number

Set the I/O block size to the given number of bytes.

-d
--make-directories

Create leading directories where needed.

--device-independent
--reproducible

Create reproducible archives. This is equivalent to ‘--ignore-devno --renumber-inodes’.

-D dir
--directory=dir

Change to directory dir

-E file
--pattern-file=file

Read additional patterns specifying filenames to extract or list from file.

-f
--nonmatching

Only copy files that do not match any of the given patterns.

-F [[user@]host:]archive-file
-O [[user@]host:]archive-file
--file=[[user@]host:]archive-file

Use the supplied archive-file instead of standard input. Optional user and host specify the user and host names in case of a remote archive.

--force-local

Treat the archive file as local, even if its name contains colons.

-H format
--format=format

Use given archive format. See format, for a list of available formats.

--ignore-devno

Store 0 in the device number field of each archive member, instead of the actual device number.

-l
--link

Link files instead of copying them, when possible.

-L
--dereference

Dereference symbolic links (copy the files that they point to instead of copying the links).

-m
--preserve-modification-time

Retain previous file modification times when creating files.

-M string
--message=string

Print string when the end of a volume of the backup media is reached.

-n
--numeric-uid-gid

In the verbose table of contents listing, show numeric UID and GID values.

--no-preserve-owner

Do not change the ownership of the files.

--only-verify-crc

When reading a CRC format archive, only verify the CRC’s of each file in the archive, don’t actually extract the files

--quiet

Do not print the number of blocks copied.

--rsh-command=command

Use command instead of rsh to access remote archives.

-r
--rename

Interactively rename files

--renumber-inodes

Renumber inodes when storing them in the archive.

-R
--owner=[user][:.][group]

Set the ownership of all files created to the specified user and/or group. See owner.

-s
--swap-bytes

Swap the bytes of each halfword in the files

--sparse

Write files with large blocks of zeros as sparse files.

-S
--swap-halfwords

Swap the halfwords of each word (4 bytes) in the files

--to-stdout

Extract files to standard output.

-u
--unconditional

Replace all files unconditionally.

-v
--verbose

Verbosely list the files processed.

-V
--dot

Print a ‘.’ for each file processed.

-W
--warning=flag

Control warning display. Argument is one of ‘none’, ‘truncate’, ‘no-truncate’ or ‘all’. See warning, for a detailed discussion of these.


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