From owner-freebsd-questions@FreeBSD.ORG  Sat Aug 31 19:19:13 2013
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id BF19714B
 for <questions@freebsd.org>; Sat, 31 Aug 2013 19:19:13 +0000 (UTC)
 (envelope-from dale@dalescott.net)
Received: from smtp-out-03.shaw.ca (smtp-out-03.shaw.ca [64.59.136.139])
 by mx1.freebsd.org (Postfix) with ESMTP id 948942070
 for <questions@freebsd.org>; Sat, 31 Aug 2013 19:19:13 +0000 (UTC)
X-Cloudmark-SP-Filtered: true
X-Cloudmark-SP-Result: v=1.1 cv=KbdnvV9g8TRf6O+NCh6TOyF5LS0weEPBhaAycnKeCs0=
 c=1 sm=1
 a=Fh0rvC36w9IA:10 a=-PjAFavhx0cA:10 a=BLceEmwcHowA:10 a=kj9zAlcOel0A:10
 a=TnnSnozJutt0IcAQwEzKEw==:17 a=QrILeg4qybJGAr1z1jQA:9 a=CjuIK1q_8ugA:10
 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117
Received: from unknown (HELO dalet61) ([68.144.182.135])
 by smtp-out-03.shaw.ca with ESMTP; 31 Aug 2013 13:19:04 -0600
From: "Dale Scott" <dale@dalescott.net>
To: <questions@freebsd.org>
Subject: find ports that aren't required anymore
Date: Sat, 31 Aug 2013 13:19:07 -0600
Message-ID: <004001cea67e$f774a530$e65def90$@dalescott.net>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Outlook 14.0
Thread-Index: Ac6mfgLfY6JaQlX1T/isCNm97vQM/w==
Content-Language: en-us
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
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: Sat, 31 Aug 2013 19:19:13 -0000

I was using the postfix port, but decided to replace it with ssmtp to reduce
ports in use and simplify system updating (deleting postfix with
pkg_delete). Is it possible that deleting postfix will leave ports installed
that aren't required anymore? Will pkg_delete also delete any dependencies
no longer required? If I could have ports still installed that aren't
required anymore? How can I find them now? Portmaster?

All the information I could find related to finding dependencies for a port,
not for finding installed ports that don't have parent dependencies. Is it
possible to invoke "pkg_info -R" on all ports and filter the output?

TIA,
Dale