Linux in a Nutshell, Third Edition

Name

cpio

Synopsis

cpio flags [options]

Description

Copy file archives in from or out to tape or disk, or to another location on the local machine. Each of the three flags -i, -o, or -p accepts different options.

Flags

-i, --extract [options] [patterns]

Copy in (extract) from an archive files whose names match selected patterns. Each pattern can include Bourne shell filename metacharacters. (Patterns should be quoted or escaped so they are interpreted by cpio, not by the shell.) If pattern is omitted, all files are copied in. Existing files are not overwritten by older versions from the archive unless -u is specified.

-o, --create [options]

Copy out to an archive a list of files whose names are given on the standard input.

-p, --pass-through [options] directory

Copy (pass) files to another directory on the same system. Destination pathnames are interpreted relative to the named directory.

Comparison of valid options

Options available to the -i, -o, and -p flags are shown here. (The - is omitted for clarity):

                     i:   bcdf mnrtsuv B SVCEHMR IF
o: 0a c         vABL VC HM O F
p: 0a  d lm    uv  L V    R

Options

-0, --null

Expect list of filenames to be terminated with null, not newline. This allows files with a newline in their names to be included.

-a, --reset-access-time

Reset access times of input files after reading them.

-A, --append

Append files to an existing archive, which must be a disk file. Specify this archive with -O or -F.

-b, --swap

Swap bytes and half-words to convert between big-endian and ...