From owner-freebsd-questions@FreeBSD.ORG  Mon Jun  3 08:37:53 2013
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id 81398319
 for <freebsd-questions@freebsd.org>; Mon,  3 Jun 2013 08:37:53 +0000 (UTC)
 (envelope-from guru@unixarea.de)
Received: from ms16-1.1blu.de (ms16-1.1blu.de [89.202.0.34])
 by mx1.freebsd.org (Postfix) with ESMTP id 443701E20
 for <freebsd-questions@freebsd.org>; Mon,  3 Jun 2013 08:37:53 +0000 (UTC)
Received: from [89.204.135.10] (helo=tiny.Sisis.de)
 by ms16-1.1blu.de with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32)
 (Exim 4.69) (envelope-from <guru@unixarea.de>) id 1UjOzi-0007aN-9p
 for freebsd-questions@freebsd.org; Mon, 03 Jun 2013 09:15:54 +0200
Received: from tiny.Sisis.de (localhost [127.0.0.1])
 by tiny.Sisis.de (8.14.5/8.14.3) with ESMTP id r537Fpxe001170
 for <freebsd-questions@freebsd.org>; Mon, 3 Jun 2013 09:15:52 +0200 (CEST)
 (envelope-from guru@unixarea.de)
Received: (from guru@localhost)
 by tiny.Sisis.de (8.14.5/8.14.3/Submit) id r537FphK001169
 for freebsd-questions@freebsd.org; Mon, 3 Jun 2013 09:15:51 +0200 (CEST)
 (envelope-from guru@unixarea.de)
X-Authentication-Warning: tiny.Sisis.de: guru set sender to guru@unixarea.de
 using -f
Date: Mon, 3 Jun 2013 09:15:51 +0200
From: Matthias Apitz <guru@unixarea.de>
To: freebsd-questions@freebsd.org
Subject: Re: change specified byte in a hex file
Message-ID: <20130603071549.GA993@tiny.Sisis.de>
References: <CAA_1SgECkODHZXd0J1UHabAnNRNkcCxeRz9hWNKK0WNgAV4Xbg@mail.gmail.com>
 <51AC3963.9090602@ayan.net>
 <CAA_1SgGFjs-CnbLcnsfaXS-wuwZ5uqf9CRpjup8fBDCb6D8Cbw@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <CAA_1SgGFjs-CnbLcnsfaXS-wuwZ5uqf9CRpjup8fBDCb6D8Cbw@mail.gmail.com>
X-Operating-System: FreeBSD 10.0-CURRENT r235646 (i386)
User-Agent: Mutt/1.5.21 (2010-09-15)
X-Con-Id: 51246
X-Con-U: 0-guru
X-Originating-IP: 89.204.135.10
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: Matthias Apitz <guru@unixarea.de>
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/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: Mon, 03 Jun 2013 08:37:53 -0000

El día Monday, June 03, 2013 a las 11:19:24AM +0430, s m escribió:

> thanks Ayan,
> 
> but isn't there any command in freebsd to do it for me??

There is chexedit in the ports.

	matthias
-- 
Sent from my FreeBSD netbook

Matthias Apitz               |  - No system with backdoors like Apple/Android
E-mail: guru@unixarea.de     |  - Never being an iSlave
WWW: http://www.unixarea.de/ |  - No proprietary attachments, no HTML/RTF in E-mail
phone: +49-170-4527211       |  - Respect for open standards