From owner-freebsd-questions@FreeBSD.ORG Thu Nov 8 23:11:55 2007 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 AE84116A421 for ; Thu, 8 Nov 2007 23:11:55 +0000 (UTC) (envelope-from erik@cepheid.org) Received: from mail.cepheid.org (aleph.cepheid.org [72.232.60.94]) by mx1.freebsd.org (Postfix) with ESMTP id 8793613C4CA for ; Thu, 8 Nov 2007 23:11:55 +0000 (UTC) (envelope-from erik@cepheid.org) Received: by mail.cepheid.org (Postfix, from userid 1006) id 476DF9B4057; Thu, 8 Nov 2007 17:14:21 -0600 (CST) Date: Thu, 8 Nov 2007 17:14:21 -0600 From: Erik Osterholm To: Dan Nelson Message-ID: <20071108231421.GA42848@aleph.cepheid.org> Mail-Followup-To: Erik Osterholm , Dan Nelson , FreeBSD Questions Mailing List References: <6dcf0dbc0711080901g49043bb1u1a8e38cfacbde15c@mail.gmail.com> <20071108175951.GC18314@darklight.org.ru> <6dcf0dbc0711081316h7748e759w101e5df72e1514d7@mail.gmail.com> <20071108214754.GA22005@dan.emsphone.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071108214754.GA22005@dan.emsphone.com> User-Agent: Mutt/1.4.2.3i Cc: FreeBSD Questions Mailing List Subject: Re: Determine FreeBSD version of binary 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: Thu, 08 Nov 2007 23:11:55 -0000 On Thu, Nov 08, 2007 at 03:47:54PM -0600, Dan Nelson wrote: > In the last episode (Nov 08), John Smith said: > > On Nov 8, 2007 6:59 PM, Yuri Pankov wrote: > > > May be not entirely correct, but close: > > > > > > ldd binary | grep libc.so > > > > Yes, that helps somewhat. At least I now know that it's FreeBSD 4.x. > > And before I again forget something I forgot to mention earlier on: I > > also have a file called 'kernel'. Could that somehow give somewhat > > more detailed information about exactly which 4.x kernel it is, and > > if so, how would I go about doing that ? > > Run "strings /kernel | tail" on it. > > There's also a better way to determine the FreeBSD version an > executable was built for. As long as you didn't build world with -O2, > the "file" command can print it. Note that you will need to run a 5.x > or newer version of file, since even though 4.x puts the version in > each binary, its file command doesn't print it. > > $ file /bin/ls > /bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), for FreeBSD 7.0 (700052), dynamically linked (uses shared libs), FreeBSD-style, stripped > $ file /mnt/oldsystem/bin/ls > /mnt/oldsystem/bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1, for FreeBSD 4.2, statically linked, stripped > > If you like building with -O2, apply the patch in PR 101590. Interesting. Does 6.2/amd64 build with -O2 by default? $ file /bin/ls /bin/ls: ELF 64-bit LSB executable, AMD x86-64, version 1 (FreeBSD), dynamically linked (uses shared libs), stripped This was after a buildworld with no special options added, and nothing affecting the kernel in make.conf. Erik