similar to: help wanted using R in a classroom

Hi - I have NUT running very nicely on a serial port on one of my OpenBSD servers, and using hidups on a RHEL4 box. Now I'd like to run it on two Macs, a PowerMac and an XServe G4. What is the USB port I need to configure, and do I need the newhidups driver? Thanks in advance for the help! Ted

I've installed nut on a Mac OS X machine (XServe running Mac OS X 10.3.9). It all seems to work fine except..... I can't figure out where to put the upsdrvctl shutdown command in order to get the ups to cut power after the computer shuts down. There doesn't seem to be any sort of script that gets run at shutdown time. Has anyone successful done this under Mac OS X? Can you

Does anyone know of a way to rate limit ssh connections from an IP address ? We are starting to see more and more brute force attempts to guess simple passwords "/usr/sbin/inetd -wWl -C 10" is nice for slowing down attempts to services launched via inetd. Is there an equiv method for doing this to sshd? Running from inetd has some issues supposedly. ---Mike

Dear everybody, In our game-theory lesson we have run several classroom-experiments where the students had to decide for a natural number between one and seven. I have troubles now to visualize the results: be a the vector of answers. hist(a) will not assume natural numbers as answers, but rational. It will make the brakes exactly at the natural numbers, which is difficult to interpret, as

Hello there, complete off-topic, sorry about this, but my former idea was to install a CentOS on an old mac mini (PPC!). Disappointed to see that PowerPC is not a supported architecture and that non ARM or Intel architecture are not managed by recent distros.. :-(. Searching the web, I see very few possibilities to install a recent (I need gnome2) GNU/Linux distro on such hardware. I gave Linux

We _cannot_ go about renaming files, for a number of reasons.. the primary being some of the files are technically not ours to alter without a clients permission (names and all) and you don't understand just how many files there are. There are quite probably thousands of files, spread across _hundreds_ of cds and dvds which comes to a total of roughly 400GB. As to a Mac server, i'm not

Hi I am managing samba server in school. "Server" is on VIA 800MHz processor with 80GB IDE hard drive. there is no domain at the moment, just simple sharing, security share and smbpasswd file. I have 300 computers (each classroom has 20) with winxp sp2 auto logon limited local account, 300 users (6 intake groups). Passworded home directorys on Samba and Pupils have access to it by

Dear R People: I am using R for teaching purposes in a large classroom. Each computer has its own copy of R. However, every once in a while, about half of us will get thrown out of R, for no apparent reason. By the way, it has happened in other classrooms as well. Has anyone else run into this, please? If so, how have you solved this problem, please? Thanks in advance! R for Windows

An interesting, and topical, example of multivariate data for classroom illustrations are the American college football rankings. Starting at the end of October (or "week 8", the 8th week of the football season) a set of rankings called the BCS (Bowl Championship Series) will be published. This is a composite ranking based on two subjective polls, the Harris and USA Today polls, and a

--Apologies if you get two copies of this message - it was submitted for moderation and hasn''t appeared on the list in two days, so I''m resubmitting. Hi all, Just a quick question. Is it possible to utilise an Apple Xserve RAID as an array for use with ZFS with RAID-Z in Solaris? I''ve seen various mentions of ''zfs'' and ''xserve

I''ve been mucking with xen for quite a while but recently started focusing on custom network setups. I''d like to be able to create VMs on the fly from a base image and set network settings in each without booting the image up. This strange setup is for a classroom environment. At the beginning of the quarter the instructor would run a script that creates all the

Hi I''m using princexml pdf generation in one of our apps and bump into this very weird problem. On our ubuntu box and local machines (MacBook Pro) pdfs are generated flawlessly. On the production xserve (running the rails app in production mode on a mongrel cluster), a 2.8 GHz Quad-Core Intel Xeon, strange things start happening. The following sections give back nil values in

I am considering a G5/XServe for a conferencing system. I need to put a TDM card in the machine for timing. Is anyone out there using Asterisk on Mac with zaptel drivers? I am looking at using Linux for the OS. If so what is your experience? Have a great day! Geoff

http://hardware.slashdot.org/story/09/06/09/2336223/Apple-Removes-Nearly-All-Reference-To-ZFS

Hi All, I''m super a super ruby nuby, so bare with me. I am working on a small app that has a particular form that I am having a rough time figuring out the best to way to handle. Basically here it is, each school has one or more classrooms, and each classroom can have one or more teachers. Here''s what I am trying to do (edit a school): - click on a link to edit a School -

Dear R-Devel, I have had it in my mind for some time now that a Task View related to R and education might be a good thing. There are currently 19 Task Views, covering a broad spectrum of general topics for which R may be used. The homepage lists 64 books related to R, and several of them have accompanying packages on CRAN. There is a wiki and a host of contributed documentation. We also have a

Hello, I have a simulated data structure in which students are nested within teachers, and with each student are associated two test scores. There are 20 classrooms and 25 students per classroom, for a total of 500 students and two scores per student. Here are the first 10 lines of my dataframe "d": studid tchid Y time 1 1 1 -1.0833222 0 2 1 1

Xen List After planning for a year to move my Xen 3.4 classrooms to XCP I''m now making an effort. With the old system I wrote many lines of bash scripts around the xm command to group and manage my VMs. I used sudo to grant privileges for each student to start, stop, console into, reboot, and wipe their VMs without any interaction from me. Now with XCP I had the hope of moving to the

Hello! I'm trying to install Centos 6.4 64 bit on this Xserve: http://www.everymac.com/systems/apple/xserve/specs/xserve-intel-xeon-2.8-eight-core-specs.html I got a bootloader from: http://blog.christophersmart.com/2009/07/23/linux-on-an-apple-xserve-efi-only-machine/ as none of the official Centos releases (full, minimal, network 64 bit) boot on this machine. They all crash when loading

prepping to teach a 5-day CompTIA linux+ course next week with CompTIA-supplied courseware and, given that it was my choice, i chose to set up the classroom with centos 7.4 on all the student systems since i assume most students are there to learn sysadmin and that's the most likely platform they'll have when they get back to work. also, most students are taking this course to prep for the