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Re: [Bug-tar] Solution to updating compressed archives: Pre-compress fil
Re: [Bug-tar] Solution to updating compressed archives: Pre-compress files
Sun, 30 Oct 2011 13:23:10 -0700
On Oct 29, 2011, at 10:04 AM, Carl Eklof wrote:
> I frequently run into situations where I need to update archives. I of course
> also want to conserve space so I use compression. These two desires are not
> directly supported in the current version of tar.
> The solution requires two parts of the code to be modified:
> 1) Compress each file before adding it to the archive.
> 2) Upgrade the tar section of meta about each file in the archive to provide
> storage space for specifying what compression algorithm/program is used for
> that file (if any).
Why do you need "tar" to do this?
"zip" does exactly what you describe, and newer Info-Zip versions do a good job
of preserving Unix permissions, timestamps, etc.