From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id d57fa1c4 for ; Fri, 31 May 2019 07:53:09 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id 062A79B85E; Fri, 31 May 2019 17:53:08 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 02F7C9B680; Fri, 31 May 2019 17:52:31 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 9C73A9B680; Fri, 31 May 2019 17:52:29 +1000 (AEST) X-Greylist: delayed 2125 seconds by postgrey-1.36 at minnie.tuhs.org; Fri, 31 May 2019 17:52:28 AEST Received: from seine.is.ed.ac.uk (seine.is.ed.ac.uk [129.215.17.202]) by minnie.tuhs.org (Postfix) with ESMTPS id 6466D9B67F for ; Fri, 31 May 2019 17:52:28 +1000 (AEST) Received: from crunchie.inf.ed.ac.uk (crunchie.inf.ed.ac.uk [129.215.202.41]) by seine.is.ed.ac.uk (8.14.7/8.14.7) with ESMTP id x4V7GvfR027809 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 31 May 2019 08:16:57 +0100 Received: from maysl7.inf.ed.ac.uk (openvpn-105-002.inf.ed.ac.uk [129.215.105.2]) by crunchie.inf.ed.ac.uk (8.14.7/8.14.7) with ESMTP id x4V7Gteo012111; Fri, 31 May 2019 08:16:55 +0100 Received: from maysl7.inf.ed.ac.uk (localhost [127.0.0.1]) by maysl7.inf.ed.ac.uk (8.14.7/8.14.7) with ESMTP id x4V7GtsJ011721; Fri, 31 May 2019 08:16:55 +0100 Message-Id: <201905310716.x4V7GtsJ011721@maysl7.inf.ed.ac.uk> X-Mailer: exmh version CVS 2005/04/14 with nmh-1.7.1 X-Image-URL: http://homepages.inf.ed.ac.uk/gdmr/gdmr.tif X-URL: http://homepages.inf.ed.ac.uk/gdmr/ X-PGP-keyID: AD758CC5 X-PGP-fingerprint: B91E D430 1E0D 5883 EF6A 426C B676 5C2B AD75 8CC5 X-PGP-URL: http://homepages.inf.ed.ac.uk/gdmr/PGP-DSA-key.asc From: George Ross To: Rico Pajarola In-reply-to: Your message of "Thu, 30 May 2019 16:27:04 +0200." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 31 May 2019 08:16:55 +0100 X-Edinburgh-Scanned: at seine.is.ed.ac.uk with MIMEDefang 2.84, Sophie, Sophos Anti-Virus, Clam AntiVirus X-Scanned-By: MIMEDefang 2.84 on 129.215.17.202 Subject: Re: [TUHS] Quotas - did anyone ever use them? X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" > And of course we > found all kinds of tricks to get around those quotas (e.g. "giving away" > large files to someone with leftover quota), which is why on many systems > you're not allowed to chown files if you're not root. When I took over running a labful of SunOS machines that were used by our CS students, one of the first thing I did was turn off a few things in the system call vector for UIDs higher than a "staff" cutoff. That included things like chown, chmod and setting the umask. As well as making it harder for them to share solutions, it also had the advantage of making other systems more tempting targets... -- George D M Ross MSc PhD CEng MBCS CITP University of Edinburgh, School of Informatics, Appleton Tower, 11 Crichton Street, Edinburgh, Scotland, EH8 9LE Mail: gdmr@inf.ed.ac.uk Voice: 0131 650 5147 PGP: 1024D/AD758CC5 B91E D430 1E0D 5883 EF6A 426C B676 5C2B AD75 8CC5 The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.