[ale] more tar

[dsj at sylvester.dsj.net (David S. Jackson)]

Okay, so far I like the tar cvfz tarball.tar.gz ./dirname idea
the best.  But what if I want to only update the changed files
from dirname to tarball.tar.gz?  I guess I can't update a
compressed tarball, so do you have to gunzip it, update it, then
regzip it?

Example:

tarball.tar.gz exists for /pathto/dirname.

if [ -f tarball.tar.gz ]; then
  gunzip tarball.tar.gz
  tar uvf tarball.tar ./pathto/dirname | gzip -9 > tarball.tar.gz
else
  tar cvfz tarball.tar.gz ./pathto/dirname
fi
  

I'm ashamed I don't know this stuff better, but I guess I'd sure
as hell better learn it now.  info tar is huge; it's taking me
time to read it through.  :-)

Oh, I got unsubscribed from the list, so please reply to me
individually, okay?

TIA!

--
David S. Jackson                        dsj at dsj.net
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The cost of feathers has risen, even down is up!
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