restoring tar backup

[Sajith P V]

Hi all,

I have a tar backup in tape. I want exclude some files and directories while restoring the tar backup. I cannot find a command for the same in the net. Expecting some gud solution from you people.


Sajith

[Hasan Atasoy]

hi ;

assuming tar file is in the tape ( /dev/rmt/omn )

tar xvf /dev/rmt/0mn /path_of_the file


eg. you want to restore /tmp/myfile on the tape

then
tar xvf /dev/rmt/omn/ /tmp/myfile,

you can look at tape archive list by

tar tvf /dev/rmt/omn

Hasan

[Dennis Handly]

There really isn't any good way to exclude things with tar(1). You can include complete directory trees and try to skip the ones you don't want.
You could also list all of the files you want to restore by using "tv" as Hasan mentioned.

You could also use pax(1) to read your tarfile. It has a -c option to exclude patterns.

[Steven Schweda]

> I cannot find a command for the same in the
> net.

"man tar" would be my first resource.

> You could also use pax(1) [...]

Or GNU "tar":

[...]
--exclude=pattern
--exclude-from=file
[...]

http://www.gnu.org/software/tar/
http://www.gnu.org/software/tar/manual/

[Sajith P V]

Can any one tell me the syntax of pax command to exclude the file while restoring?.....

Sajith

[Dennis Handly]

Here is pax(1) for 11.31:
http://docs.hp.com/en/B2355-60130/pax.1.html

You need:
$ pax -r -f /dev/rmt/0mn -c pattern ...

You can leave out the "-r" (for read) to see if your exclude patterns are correct.

[john korterman]

Hi Sajith,

you could perhaps use the -w option for tar, e.g.:
# tar -xvwf /dev/whatever/..

regards,
John K.

[Dennis Handly]

>John: you could perhaps use the -w option for tar

That might work. But you may have to have a file with the appropriate number "y" and "n" to match which file is being restored. And would tar read from stdin?

[john korterman]

Hi again,

the -w option on the command line causes tar to prompt the user for each file in the archive.
(although I would have expected an -i option for something like that)


regards,
John K.

[Sajith P V]

hi,
my tar backup contains a lot of files and directories. I don't think it is possible to type n and y for these much files..

Sajith