From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <9e333833932a9ea6bcc1a0a7594ccd19@rei2.9hal>
Date: Wed, 19 Sep 2012 08:47:33 +0200
From: cinap_lenrek@gmx.de
To: 9fans@9fans.net
In-Reply-To: <20120919063127.4FD08B827@mail.bitblocks.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
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Subject: Re: [9fans] union directories exploration
Topicbox-Message-UUID: ba2cf700-ead7-11e9-9d60-3106f5b1d025

this has been done before. i can't remember who wrote it
and i couldnt find it in the contrib index.

#!/bin/rc

fn get_dirs {
	tmp = /tmp/$pid ^_dirs
	echo -n > $tmp

	for (f in `{du -nf $root_in | awk '{print $2}' })
		ls -l $f | grep '^d' | awk '{print $10}' >> $tmp
	dirs = `{sort $tmp}
	rm $tmp
}

root_in=$1
root_out=$2

if(~ $3 '')
	get_dirs;
if not
	dirs = `{cat $3};

for(i in $dirs){
	o=`{echo $i | awk '{gsub(ENVIRON["root_in"], ENVIRON["root_out"], $0); print}'}
	echo bind -bc $i $o
}


theres also divergefs.

--
cinap