How do I use cpio command under Linux?

Posted on in Categories , , , , , , , , last updated September 12, 2007

Q. Can you explain how do I use cpio under Linux / UNIX?

A. GNU cpio is a tool for creating and extracting archives, or copying files from one place to another. It handles a number of cpio formats as well as reading and writing tar files. cpio command works just like tar, only better.

As I said earlier, cpio works like tar but it can read input from the “find” command. This is nifty feature. For example you can find out all *.c files and backup with cpio command.# find / -name "*.c" | cpio -o --format=tar > c-file.backup.tar
# find / -iname "*.pl" | cpio -o -H tar > perl-files.tar
You can also specify file name using -F option:# find / -iname "*.pl" | cpio -o -H tar -F perl-files.tarWhere,

  • -o: Create archive
  • -F: Archive filename to use instead of standard input or output. To use a tape drive on another machine as the archive.
  • -H format: Specify file format to use.
  • -i: Restore archive

You can extract archive with the following command:# cpio -i -F perl-files.tarYou can list file inside archive i.e. list contents of the cpio file with following command:# cpio -it -F perl-files.tarYou can write archive of /home to tape (drive /dev/nst0), type the following command:# find /home | cpio -o -H tar -F /dev/nst0Restore backup using following command:# cpio -i -F /dev/nst0Backup /home dir, to remote system tape drive:# find /home | cpio -o -H tar -F [email protected]:/dev/nst0 --rsh-command=/usr/bin/ssh

7 comment

  1. Hi all,

    i’m new to unix can any help me full and incremental back scripts for Solaris 10 and RHEL 6 .

    Thnaks in advance.

  2. `pax` aims to replace both `tar` and `cpio` as it can read from both, and write to both. In can read files from `find`, too, and can operate in pass-through mode, like `cpio`

  3. Nicely done. Very helpful. You can also redirect the cpio output to thumb drive
    find /home/jsmtih cpio -ov > media//backup.cpio

Leave a Comment