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- This is GNU cpio, a program to manage archives of files.
- As of version 2.0, it supports the features of the System V release 4
- cpio, including support for tar archives.
-
- This package also includes rmt, the remote tape server, and mt, a tape
- drive control program; these two programs will only be compiled if
- your system supports remote command execution, and tape drive control
- operations, respectively.
-
- See the file INSTALL for compilation and installation instructions for Unix.
-
- For non-Unix systems:
-
- makefile.pc is a makefile for Turbo C or C++ or Borland C++ on MS-DOS.
-
- makefile.os2 is a makefile for MS C and GNU C (emx/gcc) on OS/2.
- cpio.def is a linker definition file for the MS C OS/2 version.
-
-
- The main advantages of GNU cpio over Unix versions are:
-
- * It can access tape drives on other hosts using TCP/IP.
-
- * `-o' and `-p' can copy symbolic links either as symbolic links or,
- with `-L', as the files they point to.
-
- * `-i' automatically recognizes the archive format and tries to
- recover from corrupted archives.
-
- * The output of '-itv' looks like 'ls -l'.
-
- * It accepts long-named options as well as traditional
- single-character options.
-
- A few features of other versions of cpio are missing from GNU cpio, including:
-
- * The `-6' option to support Sixth Edition Unix cpio archives with `-i'.
-
- * An option to limit volume size, like afio -s.
-
-
- GNU cpio supports the POSIX.1 "ustar" tar format. GNU tar supports a
- somewhat different, early draft of that format. That draft format has
- a slightly different magic number in the tar header and doesn't
- include the path prefix part of the header, which allows storing file
- names that are longer than 100 characters. GNU cpio knows to
- recognize the nonstandard GNU tar "ustar" archives.
-
- The following patch to GNU tar 1.11.1 makes GNU tar recognize standard
- "ustar" archives, such as GNU cpio produces, except that it won't use
- the path prefix. Without this patch, GNU tar thinks that standard
- "ustar" archives are old-format tar archives and can not use the extra
- information that "ustar" format contains. If you use this patch,
- remember that you will lose the beginnings of paths that are longer
- than 100 characters. That's why it's not an official part of GNU tar.
- (Adding support for the path prefix to GNU tar is not trivial.)
-
- --- list.c.orig Mon Sep 14 17:04:03 1992
- +++ list.c Wed Oct 14 14:02:28 1992
- @@ -439,7 +439,7 @@
- st->st_ctime = from_oct(1+12, header->header.ctime);
- }
-
- - if (0==strcmp(header->header.magic, TMAGIC)) {
- + if (0==strncmp(header->header.magic, TMAGIC, 5)) {
- /* Unix Standard tar archive */
- *stdp = 1;
- if (wantug) {
-
- Mail suggestions and bug reports for GNU cpio to
- bug-gnu-utils@prep.ai.mit.edu.
-