extract from TAR

big123456 · #1 (**permalink**) 07-27-2005

Hi,
when I extract a TAR archive by tar -xf file.tar
the file.tar file stays on disk. Then I need two time the disk space.
How can I avoid that ? How to ask not to keep file.tar ?
Many thanks.

vino · #2 (**permalink**) 07-27-2005

After the tar extraction, cant you delete the tar file ?

Vino

sysera · #3 (**permalink**) 07-27-2005

Quote:

Originally Posted by vino

After the tar extraction, cant you delete the tar file ?

Vino

Sounds like maybe he doesn't have enough disk space for both at once? Not sure.

vino · #4 (**permalink**) 07-27-2005

Quote:

Originally Posted by big123456

Hi,
when I extract a TAR archive by tar -xf file.tar
the file.tar file stays on disk. Then I need two time the disk space.

I assume the o/p had a successful tar extraction and then realized the space consumed was twice the size of the tar file.

If the o/p ran out of space, I dont think tar extraction would have completed. I havnt encountered such a situation tho'.

Cheers'
Vino

big123456 · #5 (**permalink**) 07-27-2005

Hi,
effectively I have a disk space problem. If I have a 50Gb tar file, I should have a 100 Gb disk although at the end I delete my file.tar and again I have 50Gb which is not used. Then is there any option permiting to use a disk of 50Gb?
many thanks.

vino · #6 (**permalink**) 07-27-2005

So, you want to do the untaring with just 50Gb of space.

This is what I have in mind. And I shall try to attempt it here.

Get the tar listing onto a list.txt
For each file-name from list.txt
Extract file-name from file.tar
Delete file-name from file.tar

Code:

#! /bin/sh

tar tf big.tar > big.txt

while read file
do
(tar xf big.tar $file) && (tar --delete --file=big.tar $file)
done < big.txt

This should do it.

Check it out.

Vino

big123456 · #7 (**permalink**) 07-27-2005

thank you. I'm runing Solaris.
I made a script from your code. this is the output :
$myscript
tar: d: unknown option
Usage: tar {txruc}[vfbFXhiBDEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...
tar: d: unknown option
Usage: tar {txruc}[vfbFXhiBDEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...
tar: d: unknown option
Usage: tar {txruc}[vfbFXhiBDEelmopwnq[0-7]] [-k size] [tapefile] [blocksize] [exclude-file] [-I include-file] files ...

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