From owner-freebsd-questions@freebsd.org Thu Jul 13 19:06:26 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D1EBBDABB2B for ; Thu, 13 Jul 2017 19:06:26 +0000 (UTC) (envelope-from srs0=doeu=6q=mail.sermon-archive.info=doug@sermon-archive.info) Received: from mail.sermon-archive.info (sermon-archive.info [71.177.216.148]) by mx1.freebsd.org (Postfix) with ESMTP id BE41B859DF for ; Thu, 13 Jul 2017 19:06:26 +0000 (UTC) (envelope-from srs0=doeu=6q=mail.sermon-archive.info=doug@sermon-archive.info) Received: from [10.0.1.251] (mini [10.0.1.251]) by mail.sermon-archive.info (Postfix) with ESMTPSA id 3x7lfN2zXvz2fk6Q; Thu, 13 Jul 2017 12:06:20 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: Unusual Question From: Doug Hardie In-Reply-To: <20170714011941.C20026@sola.nimnet.asn.au> Date: Thu, 13 Jul 2017 12:06:20 -0700 Cc: "freebsd-questions@freebsd.org Questions" Content-Transfer-Encoding: quoted-printable Message-Id: <33484077-6ADF-489D-BB5A-27827393C41F@mail.sermon-archive.info> References: <20170713231222.U20026@sola.nimnet.asn.au> <20170714011941.C20026@sola.nimnet.asn.au> To: Ian Smith X-Mailer: Apple Mail (2.3273) X-Virus-Scanned: clamav-milter 0.99.2 at mail X-Virus-Status: Clean X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Jul 2017 19:06:26 -0000 > On 13 July 2017, at 08:24, Ian Smith wrote: >=20 > On Fri, 14 Jul 2017 01:12:17 +1000, Ian Smith wrote: >=20 >> There is no oskip; I have to check dd(1) every time myself .. = there's: >> iseek=3Dn Seek on the input file n blocks. This is synonymous = with >> skip=3Dn. >> oseek=3Dn Seek on the output file n blocks. This is synonymous = with >> seek=3Dn. > [..] >>> I didn't capture this but I did run the dd with the oskip of the big=20= >>> number and it showed all zeros. >>=20 >> There is no oskip. oseek (aka skip) would work. >=20 > Argh .. I've done it myself: that should say oseek (aka seek). For = this=20 > very reason I _never_ use iseek or oseek, being quite confused enough = :) >=20 > cheers, Ian Yes oskip should have been oseek. I didn't have access to the actual = screen or man page when writing that all down. I previously set = kern.geom.debugflags=3D16. The system here is very old and i386 only. = I may play with that again if time permits.=