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Full Discussion: cpio question
Special Forums UNIX and Linux Applications cpio question Post 302158183 by HNelson on Monday 14th of January 2008 04:13:14 PM
Old 01-14-2008
cpio question
I apologize in advance if someone else has posted a similar question and I overlooked the answer in the forums, so here goes.

i'm using cpio to retrieve data from a tape and the switches i'm using are
cpio -AvicdumkB -I/dev/rct0

now the data i'm trying to restore is a specific couple of directories off of /u. I created a /tape directory under /u to put all the data from the tape into, so that went something like this.

pwd = /u
mkdir tape
chmod 777 tape (this is only a temp directory and only 1 person (me) has root access so 777 is ok for the permissions)
cd tape

Now what I would like to do is restore only a few directories form that tape and have them restored into the tape directory but i'm not familiar enough with the cpio command to change the switches that I currently use.

The directory structure that I would like to restore is set up like this:

/u/prd
/u/prd2
/u/prd3
and so on up to prd8

My question is, is there a way to use cpio to restore only the prd directories from the tape without having to restore the whole tape backup?
If it makes any difference, each prd directory contains only a single .dat file. Also, i'm running SCO 5.0.7 with mp3 installed.

Many thanks with any assistance you can provide in advance. I've tried reading the man pages for cpio and they read like stereo instructions.
 

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LEARN ABOUT OSX

rpm2cpio

rpm2cpio(1)							   User Commands						       rpm2cpio(1)

NAME

       rpm2cpio - convert Red Hat Package (RPM) to cpio archive

SYNOPSIS

       rpm2cpio [file.rpm]

DESCRIPTION

       The  rpm2cpio  utility converts the .rpm file specified as its sole argument to a cpio archive on standard output. (See NOTES.) If no argu-
       ment is given, an rpm stream is read from standard input. In both cases, rpm2cpio will fail and print a usage message if the standard  out-
       put is a terminal. Therefore, the output is usually redirected to a file or piped through the cpio(1) utility.

EXAMPLES

       Example 1: Converting an rpm file

       example% rpm2cpio Device3Dfx-1.1-2.src.rpm | cpio -itv
       CPIO archive found!
       -rw-r--r--   1 root  root    2635 Sep 13 16:39 1998, 3dfx.gif
       -rw-r--r--   1 root  root   11339 Sep 27 16:03 1998, Dev3Dfx.tar.gz
       -rw-r--r--   1 root  root    1387 Sep 27 16:04 1998, Device3Dfx-1.1-2.spec
       31 blocks

       Example 2: Converting from standard input

       example% rpm2cpio < Device3Dfx-1.1-2.src.rpm | cpio -itv
       CPIO archive found!
       -rw-r--r--   1 root  root    2635 Sep 13 16:39 1998, 3dfx.gif
       -rw-r--r--   1 root  root   11339 Sep 27 16:03 1998, Dev3Dfx.tar.gz
       -rw-r--r--   1 root  root    1387 Sep 27 16:04 1998, Device3Dfx-1.1-2.spec
       31 blocks

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWrpm			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cpio(1), attributes(5)

NOTES

       rpm2cpio handles versions 3 and 4 RPMs.

SunOS 5.10							    20 Aug 2001 						       rpm2cpio(1)
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