From owner-freebsd-questions@FreeBSD.ORG Wed Apr 11 00:42:01 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A3BBD16A400 for ; Wed, 11 Apr 2007 00:42:01 +0000 (UTC) (envelope-from kline@tao.thought.org) Received: from tao.thought.org (dsl231-043-140.sea1.dsl.speakeasy.net [216.231.43.140]) by mx1.freebsd.org (Postfix) with ESMTP id 226F513C457 for ; Wed, 11 Apr 2007 00:42:01 +0000 (UTC) (envelope-from kline@tao.thought.org) Received: from tao.thought.org (localhost [127.0.0.1]) by tao.thought.org (8.13.8/8.13.1) with ESMTP id l3B0hLC1035869; Tue, 10 Apr 2007 17:43:21 -0700 (PDT) (envelope-from kline@tao.thought.org) Received: (from kline@localhost) by tao.thought.org (8.13.8/8.13.1/Submit) id l3B0hJFk035868; Tue, 10 Apr 2007 17:43:19 -0700 (PDT) (envelope-from kline) Date: Tue, 10 Apr 2007 17:43:19 -0700 From: Gary Kline To: Derek Ragona Message-ID: <20070411004319.GC35246@thought.org> References: <20070306003506.GA12553@thought.org> <6.0.0.22.2.20070306072709.02577448@mail.computinginnovations.com> <20070306165349.GA67829@thought.org> <461AEE3F.2010107@napalmriot.com> <20070410231701.GA35246@thought.org> <6.0.0.22.2.20070410183124.024f8b10@mail.computinginnovations.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6.0.0.22.2.20070410183124.024f8b10@mail.computinginnovations.com> User-Agent: Mutt/1.4.2.2i X-Organization: Thought Unlimited. Public service Unix since 1986. X-Of_Interest: Observing twenty years of service to the Unix community Cc: Rick Olson , Gary Kline , FreeBSD Mailing List Subject: Re: awk question 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: Wed, 11 Apr 2007 00:42:01 -0000 On Tue, Apr 10, 2007 at 06:35:33PM -0500, Derek Ragona wrote: > At 06:17 PM 4/10/2007, Gary Kline wrote: > >On Mon, Apr 09, 2007 at 06:54:07PM -0700, Rick Olson wrote: > >> I'm assuming you've already taken care of this, but to answer your > >> original question in AWK form, you could have done the following: > >> > >> ls -l | awk '$8 == 2006 {system("rm " $9)}' > >> > > > > i'Ll save your snippet to my growing %%% awk file in my ~/HowTo, > > thankee much. I'm in the first stages on a months-long trial on > > system tuning. This, before I'd risk publishing anything. So > > far tho, by upping and lower the NICE prio of various binaries, I > > have been able to get more than 70% efficient use out of my older > > servers. ---This *ought* to carry over to my faster machines.... > > > > Is tthere a way of using ps -alx | ask to look at nice and if it > > is non-zero (the default), to reset it to zero? > > You can easily do some of this using top, such as: > top -bS 200 | tail -n +9 | awk '{ print $5 }' > > If you want to tweak the nice value you'd need to examine the value and > then renice it as long as you are root. You'd need the PID for that, so > here's another example: > top -bS 200 | tail -n +9 | awk '{ printf("Pid: %d has Nice: %d\n", $1,$5) }' > Well, I knew there had to be a "static" way to read top. -bS is it. If NICE is 9, then renice-n -9 pid ought to reset it to 0; so in C, the check for nice or "n" would be trivial: if (n != 0) n = -n; In you example, would this be if ($1 != 0) $1 = -$1; then a '{system("renice -n $")}; or is this disallowed in awk? gary -- Gary Kline kline@thought.org www.thought.org Public Service Unix