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Date: Thu, 4 Apr 2002 01:02:11 +0300
From: Giorgos Keramidas <keramida@ceid.upatras.gr>
To: William Gnadt <wgnadt@yahoo.com>
Cc: freebsd-questions@freebsd.org, wgnadt@rri-usa.org
Subject: Re: help splitting directories
Message-ID: <20020403220211.GL848@hades.hell.gr>
References: <20020403151902.4403.qmail@web9207.mail.yahoo.com>
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On 2002-04-03 07:19, William Gnadt wrote:
> Hi:
> 
> I can generate the following output from find,
> 
> > cd /usr/ports/distfiles
> > find . -type f -ls | awk '{print $7,$11}' -
> 731400 ./bison-1.34.tar.gz
> 20288222 ./emacs-21.2.tar.gz
> 226817 ./procmail-3.22.tar.gz
> 497341 ./john-1.6.tar.gz
> 497716 ./epic4/epic4-1.0.1.tar.bz2
> 216319 ./epic4/epic4pre2-help.tar.gz
> 521458 ./links-0.97pre7.tar.gz
> 154700 ./micq-0.4.6.p1.tgz
> 428767 ./cvsup-snap-16.1f.tar.gz
> 121835 ./pidentd-2.8.5.tar.gz
> ...
>
> I'd like some pointers on splitting this list
> into smaller lists after the sum of file sizes
> reaches a fixed threshold (say ~100MB for copying
> to zip disks).

You can use awk, with something like:

	find ... | awk -v splitlen=629145600 -f script.awk

where script.awk has stuff like this:

	% cat script.awk
	BEGIN {
		rlen = 0;
	}
	{
		if ((rlen + $1) > splitlen) {
			print "---";
			rlen = 0;
		} else {
			rlen += $1;
		}
		print $0;
	}

This will insert "---" separators at the right places in the output of
find.  Then you can split at those separators :)

PS: I haven't checked the awk script above, so it might have typos or
errors.  Use at your own risk.

Giorgos Keramidas                       FreeBSD Documentation Project
keramida@{freebsd.org,ceid.upatras.gr}  http://www.FreeBSD.org/docproj/

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