From owner-freebsd-questions@FreeBSD.ORG Fri Dec 18 01:10:01 2009 Return-Path: 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 320F6106566C for ; Fri, 18 Dec 2009 01:10:01 +0000 (UTC) (envelope-from listreader@lazlarlyricon.com) Received: from proxy1.bredband.net (proxy1.bredband.net [195.54.101.71]) by mx1.freebsd.org (Postfix) with ESMTP id D97D08FC12 for ; Fri, 18 Dec 2009 01:10:00 +0000 (UTC) Received: from ipb1.telenor.se (195.54.127.164) by proxy1.bredband.net (7.3.140.3) id 4AD3E1C001CBD907 for freebsd-questions@freebsd.org; Fri, 18 Dec 2009 02:09:58 +0100 X-SMTPAUTH-B2: X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtZ4AH1lKktV44PPPGdsb2JhbACBS4cgkCWCSAEBAQE3uh2ELQSNKg X-IronPort-AV: E=Sophos;i="4.47,416,1257116400"; d="scan'208";a="17085968" Received: from c-cf83e355.09-42-6e6b7010.cust.bredbandsbolaget.se (HELO lazlar.kicks-ass.net) ([85.227.131.207]) by ipb1.telenor.se with ESMTP; 18 Dec 2009 02:09:58 +0100 Message-ID: <4B2AD666.9090404@lazlarlyricon.com> Date: Fri, 18 Dec 2009 02:09:58 +0100 From: Rolf Nielsen User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Anton Shterenlikht References: <20091218005102.GA51064@mech-cluster241.men.bris.ac.uk> In-Reply-To: <20091218005102.GA51064@mech-cluster241.men.bris.ac.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-questions@freebsd.org Subject: Re: editing a binary file X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Dec 2009 01:10:01 -0000 Anton Shterenlikht wrote: > I'm creating binary files in fortran. > Fortran adds 4 byte record delimiters at the beginning > and the end of each record, which, in the case of a binary > file, is just at the beginning and at the end of the file. > I need to delete these record delimiters, because the > software I use to visualise the binary files interprets > them as data. But I don't know how. I've looked at > hexdump and od, but those are only dumping (I think) > file contents, and I cannot see how to edit a file with them. > > Any advice? > > many thanks > anton > Hello Anton, My bet would be /usr/ports/editors/hexedit. Been a while since I've used it, but AFAIR, it has a curses or a curses like interface, and it's fairly simple to use, yet sufficiently powerful for most normal binary editing. If you want a GUI, I believe gnome (and probably KDE as well) has its own hex editor. Good luck, Rolf