From owner-freebsd-questions@FreeBSD.ORG  Thu Dec 24 04:32:32 2009
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 36C6C106566B
	for <freebsd-questions@freebsd.org>;
	Thu, 24 Dec 2009 04:32:32 +0000 (UTC)
	(envelope-from noeldude@gmail.com)
Received: from mail-yx0-f171.google.com (mail-yx0-f171.google.com
	[209.85.210.171])
	by mx1.freebsd.org (Postfix) with ESMTP id EA7C88FC0A
	for <freebsd-questions@freebsd.org>;
	Thu, 24 Dec 2009 04:32:31 +0000 (UTC)
Received: by yxe1 with SMTP id 1so7470645yxe.3
	for <freebsd-questions@freebsd.org>;
	Wed, 23 Dec 2009 20:32:31 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:mime-version:received:in-reply-to:references
	:date:message-id:subject:from:cc:content-type;
	bh=VAeNqvvn7eR4DuLhPYzbcUumUQkMzZw7jZrXQ9DNzB0=;
	b=hl5p4FIVlnf4ODhfRKHzSRqaMjmE0eEPlFhbBxCefQ4ZKYGnrbvfyJSj9RzzhwXI92
	hDlvmNpfnsmgHcUBqDXlNPAGI95UAwhdYD4yQovaLbX8lF8qvjI4eN2MyVHsnX6pu74+
	ZMEFZ68oH5654zCgVOptA1ZlKv8BZvLCABmo8=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:in-reply-to:references:date:message-id:subject:from:cc
	:content-type;
	b=MN2UZIERzUIyaDh0aKKDUSFS/JCscCm8ipGVYNM6HiD7mABGs9fd520u/twLYLgnEJ
	mmnXzikEn9B5XL9pyUGTJTCUTQ47ROLYQVPtA2ki0NfFFD6U5EU0+8O5K94hjaqoNtPV
	/B06FGzOJJPXSU9TCclPKjMtE5C7jSRvuKp+s=
MIME-Version: 1.0
Received: by 10.150.40.35 with SMTP id n35mr16773442ybn.282.1261629151204; 
	Wed, 23 Dec 2009 20:32:31 -0800 (PST)
In-Reply-To: <4B32EBDB.1090808@lazlarlyricon.com>
References: <4B32EBDB.1090808@lazlarlyricon.com>
Date: Wed, 23 Dec 2009 22:32:31 -0600
Message-ID: <cce506b0912232032v568ec1bdo2c1928e60430f3e3@mail.gmail.com>
From: Noel Jones <noeldude@gmail.com>
Cc: freebsd-questions@freebsd.org
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: Supressing dd output
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 24 Dec 2009 04:32:32 -0000

On Wed, Dec 23, 2009 at 10:19 PM, Rolf Nielsen
<listreader@lazlarlyricon.com> wrote:
> Hello everyone,
>
> I'm wondering if there's a way to supress the summary output from dd. I'm
> working on a backup script, that encrypts the backups, and after encrypting
> overwrites the unencrypted file several times using dd. I've tried to
> redirect the output with 2>&1 > /dev/null but it doesn't work. Since I run
> the script from the daily_local variable in periodic.conf, and the script
> backs up 11 filsystems (ZFS) to separate files, the mail from periodic daily
> gets ridiculously long, and most of it being dd summaries.
>
> I guess I could hack the source code of dd, but I'd prefer not to have to.
> Has anyone got any ideas?
>
> Thanks in advance and Merry Christmas to all of you,
>
> Rolf Nielsen


Order matters.

dd ...   >/dev/null 2>&1


  -- Noel Jones