From owner-freebsd-questions@FreeBSD.ORG Tue Feb 8 18:28:34 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4687516A4D8 for ; Tue, 8 Feb 2005 18:28:34 +0000 (GMT) Received: from hosea.tallye.com (joel.tallye.com [216.99.199.78]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4F9EF43D53 for ; Tue, 8 Feb 2005 18:28:33 +0000 (GMT) (envelope-from lorenl@alzatex.com) Received: from hosea.tallye.com (hosea.tallye.com [127.0.0.1]) by hosea.tallye.com (8.12.8/8.12.10) with ESMTP id j18ISOGf005540 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 8 Feb 2005 10:28:25 -0800 Received: (from sttng359@localhost) by hosea.tallye.com (8.12.8/8.12.10/Submit) id j18ISOCE005538; Tue, 8 Feb 2005 10:28:24 -0800 X-Authentication-Warning: hosea.tallye.com: sttng359 set sender to lorenl@alzatex.com using -f Date: Tue, 8 Feb 2005 10:28:24 -0800 From: "Loren M. Lang" To: Dan Nelson Message-ID: <20050208182824.GG8619@alzatex.com> References: <20050208115928.GE8619@alzatex.com> <20050208162429.GA82752@dan.emsphone.com> <20050208180233.GF8619@alzatex.com> <20050208181111.GC82752@dan.emsphone.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050208181111.GC82752@dan.emsphone.com> User-Agent: Mutt/1.4.1i X-GPG-Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc X-GPG-Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C cc: "Loren M. Lang" cc: FreeBSD Mailing list Subject: Re: ktrace as a replacement for strace X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Feb 2005 18:28:34 -0000 On Tue, Feb 08, 2005 at 12:11:11PM -0600, Dan Nelson wrote: > In the last episode (Feb 08), Loren M. Lang said: > > On Tue, Feb 08, 2005 at 10:24:29AM -0600, Dan Nelson wrote: > > > In the last episode (Feb 08), Loren M. Lang said: > > > > I'm looking for a replacement for the strace program I used to > > > > use on linux; freebsd has a port of strace, but it just hangs > > > > everytime I use it. It looks like the bsd version of strace > > > > would be ktrace/kdump. I was able to get these to print a trace > > > > of the program I ran, but it doesn't do all the nice substatuting > > > > that strace was able to do. Mainly, I just want the first > > > > argument of open to look like a string instead of a 32 bit > > > > pointer that I can't read. I'm trying to figure out what files > > > > this program is trying to read so I can edit it's configuration > > > > file. > > > > > > The string in the NAMI line immediately after an open() call is the > > > filename in kdump output. > > > > Oh, I never noticed this since I was using grep to filter out the > > open suyscalls. In strace everything is in one line. Is there > > anything then that will work like the -e option in strace so I can > > list just the syscalls I want to see? > > grep -A1 "CALL open" is about the best you can do Wow, I used to use the -A argument all the time years ago to grep. Then at some point I stopped finding a need for it and completely forgot about that. One problem with cui vs. gui, if you don't use a feature often enough, you'll forget it even exists unless you check the manpage constantly. At least with guis, the limited features they offer are always visible. > > -- > Dan Nelson > dnelson@allantgroup.com -- I sense much NT in you. NT leads to Bluescreen. Bluescreen leads to downtime. Downtime leads to suffering. NT is the path to the darkside. Powerful Unix is. Public Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C