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Re: [Bug-tar] Robustness of tar.gz files?

From: Sergey Poznyakoff
Subject: Re: [Bug-tar] Robustness of tar.gz files?
Date: Wed, 03 Oct 2007 10:56:01 +0300

Juhana Sadeharju <address@hidden> ha escrit:

> Hello. I have large tar.gz packages in archive DVDs.
> What if the file gets corrupted? Is the whole file
> useless? For example, what happens if one byte is
> altered short after the begin?

This question is not exactly tar-related. Tar does not perform
comression/decompression by itself, instead it relies on an
external program to perform the task (e.g. for .gz it is gzip).

If your compressed archive gets corrupted, you should first try
to recover it using appropriate tool (bzip2recover for bzipped files,
for example) and then to extract it using tar. In any case, you will
have to recover it manually, tar won't do it for you.

For more information about possibilities of recovery and available
recovery tools, please refer to the documentation for the compression
program you use. You may also write to the their corresponding mailing
lists, if you have any compression-specific questions.


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