From owner-freebsd-questions@FreeBSD.ORG  Sat Jan  8 21:35:32 2011
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 E772F106566B
	for <freebsd-questions@freebsd.org>;
	Sat,  8 Jan 2011 21:35:32 +0000 (UTC)
	(envelope-from keramida@ceid.upatras.gr)
Received: from igloo.linux.gr (igloo.linux.gr [62.1.205.36])
	by mx1.freebsd.org (Postfix) with ESMTP id 5C6428FC18
	for <freebsd-questions@freebsd.org>;
	Sat,  8 Jan 2011 21:35:31 +0000 (UTC)
X-Spam-Status: No
X-Hellug-MailScanner-From: keramida@ceid.upatras.gr
X-Hellug-MailScanner-SpamCheck: not spam, SpamAssassin (not cached,
	score=-0.629, required 5, ALL_TRUSTED -1.00, BAYES_00 -1.90,
	FSL_RU_URL 2.27)
X-Hellug-MailScanner: Found to be clean
X-Hellug-MailScanner-ID: p08LZGMD023604
Received: from gkeramidas-glaptop.linux.gr (217-162-216-74.dclient.hispeed.ch
	[217.162.216.74]) (authenticated bits=0)
	by igloo.linux.gr (8.14.3/8.14.3/Debian-9.4) with ESMTP id
	p08LZGMD023604
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT);
	Sat, 8 Jan 2011 23:35:22 +0200
From: Giorgos Keramidas <keramida@ceid.upatras.gr>
To: =?utf-8?B?0JrQvtC90YzQutC+0LIg0JXQstCz0LXQvdC40Lk=?= <kes-kes@yandex.ru>
References: <155307659.20110108231807@yandex.ru>
Date: Sat, 08 Jan 2011 22:35:12 +0100
In-Reply-To: <155307659.20110108231807@yandex.ru> (=?utf-8?B?ItCa0L7QvdGM?=
	=?utf-8?B?0LrQvtCyINCV0LLQs9C10L3QuNC5Iidz?= message
	of "Sat, 8 Jan 2011 23:18:07 +0200")
Message-ID: <xeiay66vt6y7.fsf@kobe.laptop>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Cc: freebsd-questions@freebsd.org
Subject: Re: How to clean system
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Sat, 08 Jan 2011 21:35:33 -0000

On Sat, 8 Jan 2011 23:18:07 +0200, =D0=9A=D0=BE=D0=BD=D1=8C=D0=BA=D0=BE=D0=
=B2 =D0=95=D0=B2=D0=B3=D0=B5=D0=BD=D0=B8=D0=B9 <kes-kes@yandex.ru> wrote:
> Hi
> System have many programs.
> Wanna to upgrade to new version of FBSD
>
> Is it possible to clean system from garbage (all programs, files,
> header files, except configuration files)
> like installing FBSD from CD?
>
> is there cmd?
> make clean-system

No, there's no such command.  If you are looking for a way to 'deinstall
all ports & packages' though, it may be as easy as:

1. Remove all the currently installed ports:

    # rm -fr /usr/local
    # mkdir /usr/local && cd /usr/local
    # mtree -deU < /etc/mtree/BSD.local.dist

2. Remove all the information about 'installed packages', because you
   don't have any of these anymore:

    # rm -fr /var/db/pkg/*

3. Optionally, if you are going to reconfigure all your ports from
   scratch, remove the saved port configuration options:

    # rm -fr /var/db/ports/*