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From: John-Paul Stewart <jpstewart@sympatico.ca>
Subject: Re: How to clone a directory structure? References: <cc8eda1b.0212281408.2826ec45@posting.google.com> <XPrP9.486238$P31.> <cc8eda1b.0212290326.5a2bca34@posting.google.com> <3b305d66f51187b8f35a675255dd908a@remailer.privacy.at> <cc8eda1b.0301010544.6b47651f@posting.google.com>
Date: Wed, 01 Jan 2003 11:39:05 -0500

Martin Gross wrote:
> 
> Anonymous <nobody@remailer.privacy.at> wrote in message news:<3b305d66f51187b8f35a675255dd908a@remailer.privacy.at>...
> > Martin Gross <mazze@writeme.com>:
> > > Need tool to create the clone structure, thanks for the idea.
> > > However, that's not the main problem.  Main issue is about maintaining
> > > the clone, i.e. in case I erase a directory inside  the source/parent
> > > tree, it should be deleted with the next "clone update" in the clone
> > > tree as well.
> >
> > 'rsync' is the tool for this job.
> >
> > (script with find and rsync snipped)
> 
> Cool, that's really what I needed.  I will first need to look into how
> performance is - for the first steps the $filelist is a 6MB file with
> some 60.000 file listings ;-)  In the final application it should end
> up with somewhere around 1/3 to 1/2 of that and I am not really sure
> about the performance yet ;-)  A simple argument such as --dirs-only
> would probably be better, but seems not available.

What about something like:

#!/bin/sh
# clone a directory stucture (no files copied)
# derived from a script by another poster
f=/your/source/directory
t=/your/destination/directory
dirlist=/tmp/dirs
mkdir -p $t
cd $f
# get the names of all directories and remove the initial ./
part
find . -type f | sed 's@^\./@@' > $dirlist
rsync -v  -rlpogDt --delete --force --exclude-from=$dirlist
. $t
rm $dirlist

The script is untested; use it at your own risk.  All I've
done is change the 'find' parameters to find and list the
directories _only_.  Then I've changed the 'rsync'
parameters to include only those (rather than excluding 6MB
of filenames).

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Again, this script is untested and is intended only to
demonstrate the concept.

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