Two questions about tar command

[fabien]

Hi!

1) I would like to extract the files from file.tar and change the path of the files. For instance, if in the tar file I have
/def/rr/toto/data/file1.dat
/def/rr/toto/data/file2.dat
/def/rr/toto/data/file3.dat

I want to get
/d/vc/tutu/data/file1.dat
/d/vc/tutu/data/file2.dat
/d/vc/tutu/data/file3.dat

Is this possible?

2)I would like to know how many files there are in an archive is tar -tvf file.tar | wc the best way to go?

Thanks!

 

[PHV]

1) man ln (the -s option)
2) tar -tf file.tar | wc -l

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[guggach]

1Q: this files are absolutely tared, so...
man chroot
1Q: a good way

don't forget, RTFMP guggach

 

[KenCunningham]

Also look at pax. I understand that this has an option to ignore the leading / in absolute pathnames, but have never used it myself.

 

[fabien]

PHV and guggach, thanks but I cannot be root.

Ken, your solution with pax is very interesting, how can I do a substitution from say /data/toto/titi to /t/rr/ll ?

 

[PHV]

In the man tar page you may discover an option to suppress absolute pathname.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[guggach]

fabien:
root ONLY can read this file, because it's
absolute, ask for assistence by sys-admin, or
install an other sys, transfert the file,
become root perms...
please, for the future
NEVER do a tar/dump of absolute paths
you ALWAYS get problems
so: tar cfv /filename /xxx IS WRONG
but: tar cfv /filename ./xxx IS OK
the f... dot before slash is your livesaver.

don't forget, RTFMP guggach

 

[KenCunningham]

Fabien, man pax, but also have a look at Thread52-567639 which gives an example. Good luck.

 

[PHV]

I agree with Ken.
man pax (the -s option)
The gnu tar may also be an option as it remove the leading / by default.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244