cpio - copy file archives in and out
cpio -o [-aABcLvzZ] [-C bytes] [-F archive] [-H format] [-O
archive] <
name-list [> archive]
cpio -i [-bBcdfmrsStuvzZ6] [-C bytes] [-E file] [-F archive]
[-H format]
[-I archive] [pattern ...] [< archive]
cpio -p [-adlLmuv] destination-directory < name-list
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 Reset the access times on files that have
been copied to
the archive.
-A Append to the specified archive.
-B Set block size of output to 5120 bytes.
-c Use ASCII format for cpio header for portability.
-C bytes
Set the block size of output to bytes.
-F archive
-O archive
Use the specified file name as the archive
to write to.
-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.
-L Follow symbolic links.
-v Be verbose about operations. List filenames
as they are
written to the archive.
-z Compress archive using gzip(1) format.
-Z Compress archive using compress(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.
-b Do byte and word swapping after reading in
data from the
archive, for restoring archives created on
systems with a
different byte order.
-B Set the block size of the archive being read
to 5120
bytes.
-c Expect the archive headers to be in ASCII
format.
-C bytes
Read archive written with a block size of
bytes.
-d Create any intermediate directories as needed during restore.
-E file
Read list of file name patterns to extract
or list from
file.
-f Restore all files except those matching the
patterns given
on the command line.
-F archive
-I archive
Use the specified file as the input for the
archive.
-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.
-m Restore modification times on files.
-r Rename restored files interactively.
-s Swap bytes after reading data from the
archive.
-S Swap words 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 gzip(1) format.
-Z Uncompress archive using compress(1) format.
-6 Process old-style cpio format archives.
-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 When possible, link files rather than creating an extra
copy.
-L Follow symbolic links.
-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.
TMPDIR Path in which to store temporary files.
cpio will exit with one of the following values:
0 All files were processed successfully.
1 An error occurred.
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.
pax(1), tar(1)
Keith Muller at the University of California, San Diego.
The -s and -S options are currently not implemented.
OpenBSD 3.6 February 16, 1997
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