Date: Sun, 7 Apr 2013 20:07:17 -0400 (EDT) From: vogelke+unix@pobox.com (Karl Vogel) To: questions@freebsd.org Subject: Re: using pax command for archive & restore Message-ID: <20130408000718.2875ABF92@kev.msw.wpafb.af.mil> In-Reply-To: <515E23E2.1090906@a1poweruser.com> (message from Joe on Thu, 04 Apr 2013 21:07:46 -0400) References: <515E23E2.1090906@a1poweruser.com>
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>> On Thu, 04 Apr 2013 21:07:46 -0400,
>> Joe <fbsd8@a1poweruser.com> said:
J> I archive using the pax command like this
J> pax -wzXt -x cpio -f ${archive_path_file} ${ip_path_file} ${ip_path_dir}
J> and restore
J> pax -rz -pe -f ${archive_path_file}
J> and it restores the contents back to the same location it came from
J> which is what I want. Now I would like to restore that archive file to
J> a different directory. This has to be simple, but I can't see the trees
J> because the forest is in the way. What am I missing here?
I use pax all the time, and it's much easier to do what you want if you
use it from a relative directory as part of a pipeline. When creating
the archive:
you% cd /some/place
you% find . -depth -print | /prog/to/remove-crap |
pax -wd -x cpio | gzip -c > /tmp/x.pax.gz
When reading it:
you% cd /other/place
you% gunzip -c < /tmp/x.pax.gz | pax -r -pe
Why do the compression outside of pax? Because now you have a choice
of gzip -1c (fast compression), bzip2 (better compression), xz (*way*
better compression), etc. If you have a ton of files to move, you can
break up the list:
you% cd /some/place
you% mkdir /tmp/work /tmp/copy
you% find . -depth -print | /prog/to/remove-crap | split - /tmp/work/x
you% for file in /tmp/work/x*; do
> b=`basename $file`
> pax -wd -x cpio < $file | gzip -c > /tmp/copy/$b.pax.gz
> scp /tmp/copy/$b.pax.gz wherever # and remove it
> rm $file
> done
--
Karl Vogel I don't speak for the USAF or my company
Why no one ever uses the Restroom on "Star Trek" #7:
Special effects dept. draws a blank on Hi-tech toilets.
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