From owner-freebsd-questions@FreeBSD.ORG  Mon Jun  2 17:21:17 2003
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
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 E5CE637B401
	for <freebsd-questions@freebsd.org>;
	Mon,  2 Jun 2003 17:21:17 -0700 (PDT)
Received: from falcon.mail.pas.earthlink.net (falcon.mail.pas.earthlink.net
	[207.217.120.74])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 44DF343F85
	for <freebsd-questions@freebsd.org>;
	Mon,  2 Jun 2003 17:21:17 -0700 (PDT)
	(envelope-from parv_fm@mailsent.net)
Received: from sdn-ap-012dcwashp0399.dialsprint.net ([63.188.113.145]
	helo=moo.holy.cow)
	by falcon.mail.pas.earthlink.net with esmtp (Exim 3.33 #1)
	id 19MzYB-0001xi-00; Mon, 02 Jun 2003 17:21:16 -0700
Received: by moo.holy.cow (Postfix, from userid 1001)
	id F0764A72A; Mon,  2 Jun 2003 20:16:07 -0400 (EDT)
Date: Mon, 2 Jun 2003 20:16:07 -0400
From: parv <parv_fm@emailgroups.net>
To: Adam <blueeskimo@gmx.net>
Message-ID: <20030603001607.GA3613@moo.holy.cow>
Mail-Followup-To: Adam <blueeskimo@gmx.net>,
	freebsd-questions@freebsd.org
References: <1054590763.16970.5.camel@jake>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1054590763.16970.5.camel@jake>
cc: freebsd-questions@freebsd.org
Subject: Re: Listing installed ports without any ports dependent on it
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
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: Tue, 03 Jun 2003 00:21:18 -0000

in message <1054590763.16970.5.camel@jake>, wrote Adam thusly...
>
> For each installed port that has NO other installed ports
> dependent on it, output the full name of the port
> 
> In other words, I want a script to generate the list of ports that
> can be deinstalled without forcing (-f).

What you need is to check if '+REQUIRED_BY' file exists.  (For finer
control, also check if it is empty or not.)  If file does not exist
(or is empty), then there is no registered dependency.

  #!/bin/sh
  pkgdb=/var/db/pkg

  for p in $pkgdb/*
  do
    [ -f "$p/+REQUIRED_BY" ] || { echo "$p" | sed -e "s!^$pkgdb/!!" ; }
  done


  - Parv

-- 
A programmer, budding Unix system administrator, and amateur photographer
ISO employment.  Details...

  http://www103.pair.com/parv/work/