.Tar File Post: 302943007

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Top Forums UNIX for Dummies Questions & Answers .Tar File Post 302943007 by Don Cragun on Monday 4th of May 2015 02:20:11 PM

05-04-2015

Registered User

Quote:

Originally Posted by Raj999

Hi Cragun

I have used the tar -u but it is adding the file if u specify to the tar file.
It is not updating the whole list of files in the tar.

With both tar -u and -r, I have to specify the file name that needs to be changed. But i want the whole list of files in the .tar to be updated.

Thanks
Rajnish

OK. Now I get it. You want tar to read your mind and magically devine what files in your archive you want to update.

Sorry, but tar doesn't work that way. The way it works is you tell tar:

what archive you want to create and the list of files to put into that archive(tar c),
what archive to which you want to add new or replacement files and the list of files to add to the end of that archive (tar r), or
what archive you want to update and the list of files to be added to or replaced in that archive (tar u).

It sounds like you just want to use tar c to recreate your archive from your original list of files. So, just use the command that created your archive in the first place to recreate your archive after you have updated the files you want in your updated archive.

You could also consider using tar t to get a list of files in an archive and use cpio or pax or tar c to update that list of files into another archive.

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