From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 752 invoked by alias); 13 Jul 2010 15:28:56 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: X-Seq: 15185 Received: (qmail 23167 invoked from network); 13 Jul 2010 15:28:44 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 Received-SPF: pass (ns1.primenet.com.au: SPF record at smasher.org designates 69.55.237.145 as permitted sender) cc: zsh-users@zsh.org Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Date: Wed, 14 Jul 2010 03:28:25 +1200 (NZST) From: Atom Smasher In-Reply-To: Message-ID: <1007140253330.5546@smasher> MIME-Version: 1.0 OpenPGP: id=0xB88D52E4D9F57808; algo=1 (RSA); size=4096; url=http://atom.smasher.org/pgp.txt References: <1007130241570.5546@smasher> <201007121737.21296.joke@seiken.de> <201007121745.20332.joke@seiken.de> <20100712161519.GO1499@prunille.vinc17.org> <1007140055140.5546@smasher> Subject: Re: zsh portable script To: "Benjamin R. Haskell" X-POM: The Moon is Waxing Crescent (5% of Full) X-Hashcash: 1:20:1007131528:zsh@benizi.com::YrXrTnLkpOPEsbDL:0000000000000000000 0000000000000000000000000G/t X-Hashcash: 1:20:1007131528:zsh-users@zsh.org::f02/4r7WVGAJGdI8:0000000000000000 0000000000000000000000000DpN On Tue, 13 Jul 2010, Benjamin R. Haskell wrote: > But, I don't recall ever needing root to read the battery status. (In > the /proc/acpi subsystem that you're using, > /proc/acpi/battery/BAT{0,1}/{info,state} are chmod 0444 on my laptop and > netbook; same for the /sys/class/ stuff I used above.) And on my > FreeBSD webhost where I have pretty resticted access, I seem to be able > to grab a lot of hardware-related info via sysctl. ============== from what i've seen, linux permissions to anything in /proc depend on the distro, but the same *info* is available to anyone with local access on a bsd box via sysctl. i'm more familiar with freebsd than linux. are you saying that /sys/class/power_supply/BAT0/charge_* will be readable when /proc/acpi/battery/BAT0/* isn't? if that's the case, i'll update the script. > Are permissions the reason you suggest running it under cron? Otherwise, > why not just regenerate in precmd()? ================== on my bsd laptop i always have at least one mrxvt with ten shells open. it seems to make sense to just have root get the info once per minute and let the shells read it from a file, than have a bunch of shells all invoking sysctl and all figuring out about the battery. i suppose it can be done without privileges, and it shouldn't burden the machine; then i suppose it might make sense to get rid of the battery script and put the logic into precmd. i suppose the worst case is a hundred or so shells all working it out for themselves... that shouldn't cause any problems... except if the machine is bogged down and it takes that much longer to wait for a prompt that's hung while something it needs to generate a battery notice is blocked (although that risk is probably there already with the load monitor). i might be able to add a short timeout, in which case it will just skip it... something to think about, i guess. -- ...atom ________________________ http://atom.smasher.org/ 762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808 ------------------------------------------------- Quidquid latine dictum sit, altum viditur. (Whatever is said in Latin sounds profound.)