Command Reference Guide
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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1/!!!intro.1
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c
cpio(1) cpio(1)
find . -depth -print | cpio -oB >/dev/rmt/c0t0d0BEST
can be handled more efficiently by:
find . -cpio /dev/rmt/c0t0d0BEST
WARNINGS
Because of industry standards and interoperability goals, cpio does not support the archival of files larger
than 2GB or files that have user/group IDs greater than 60K. Files with user/group IDs greater than 60K
are archived and restored under the user/group ID of the current process.
Do not redirect the output of cpio to a named cpio archive file residing in the same directory as the ori-
ginal files belonging to that cpio archive. This can cause loss of data.
cpio strips any leading ./ characters in the list of filenames piped to it.
Path names are restricted to PATH_MAX characters (see <limits.h> and limits(5)). If there are too
many unique linked files, the program runs out of memory to keep track of them. Thereafter, linking infor-
mation is lost. Only users with appropriate privileges can copy special files.
cpio tapes written on HP machines with the -ox[c] options can sometimes mislead (non-HP) versions of
cpio that do not support the x option. If a non-
HP (or non-AT&T) version of cpio happens to be modified
so that the (
HP) cpio recognizes it as a device special file, a spurious device file might be created.
If
/dev/tty is not accessible, cpio issues a complaint and exits.
The -pd option does not create the directory typed on the command line.
The -idr option does not make empty directories.
The -plu option does not link files to existing files.
POSIX defines a file named TRAILER!!! as an end-of-archive marker. Consequently, if a file of that
name is contained in a group of files being written by cpio -o, the file is interpreted as end-of-archive,
and no remaining files are copied. The recommended practice is to avoid naming files anything that resem-
bles an end-of-archive file name.
To create a
POSIX-conforming cpio archive, the c option must be used. To read a
POSIX-conforming cpio
archive, the c option must be used and the b, s, S, and 6
options should not be used. If the user does not
have appropriate privileges, the
U option must also be used to get POSIX-conforming behavior when reading
an archive. Users with appropriate privileges should not use this option to get POSIX-conforming behavior.
DEPENDENCIES
If the path given to
cpio contains a symbolic link as the last element, this link is traversed and pathname
resolution continues. cpio uses the symbolic link’s target, rather than that of the link.
SEE ALSO
ar(1), find(1), tar(1), cpio(4), acl(5), environ(5), lang(5), regexp(5).
STANDARDS CONFORMANCE
cpio: SVID2, SVID3, XPG2, XPG3
Section 1−−120 − 4 − HP-UX Release 11i: December 2000
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