From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <bd7767fe8b090d17d485c03d639970b1@terzarima.net>
From: Charles Forsyth <forsyth@terzarima.net>
Date: Mon, 20 Jul 2009 10:55:21 +0100
To: 9fans@9fans.net
In-Reply-To: <20090720023232.712b6a8a.eekee57@fastmail.fm>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] dcp - a deep copy script, better than dircp
Topicbox-Message-UUID: 288e91a2-ead5-11e9-9d60-3106f5b1d025

>Before I say anythign daft, what's '+'? It does not appear to be special on my system.

it's interpreted by mkfs in its proto file to mean all the substructure of a directory.
see mkfs(8).