Best of Technical Support
My brother and I would like to build a PowerPC Linux computer. Do you have ideas on where we can get a motherboard to build a PPC machine? As far as PPC Linux distros, we have found Yellow Dog, Mandrake, SuSE, Rock, Holon, Debian, Vine and Gentoo. So there are a few Linux distros out there for the PPC.
—Rick Killingsworth, email@example.com
Linux Journal just got a chance to play with a PowerPC ATX motherboard www.terrasoftsolutions.com/products/boxer. Check our next issue for our first look.
—Don Marti, firstname.lastname@example.org
These links may be of interest to you and your brother; they contain info about Linux on PPC-based machines and compatible hardware: lppcfom.sourceforge.net and linuxppc64.org. This link is related to IBM 64-bit PPC hardware www.openppc.org, and this one talks about the open PPC architecture and includes some board diagrams/plans.
—Felipe E. Barousse Boué, email@example.com
I have been looking for x86-based servers (rackmount) with “lights-out management” abilities. I currently have several Sun V100 systems with this capability, but I'm forced to use Solaris. I've been able to get headless systems set up effectively using port redirection to a serial interface, but that doesn't fix the problem of an OS crash or a server that is hung and needs a power reset or to refresh the OS remotely.
—Ron Culler, firstname.lastname@example.org
You need a hardware management card. Many of the major Intel architecture server vendors, including Dell, HP and IBM offer these cards as options on their servers. Essentially, these cards are similar to console redirection to the serial port, except they also allow you to do other things, such as remotely rebooting or completely turning off the server. Some of these cards even have network ports to do away with serial-based communications.
—Chad Robinson, email@example.com
Some motherboards like the Intel 440GX have a second serial port that can be used for out-of-band management as you mention (hardware monitoring, reset and power cycle), and of course, you can also get BIOS redirection on the other port. To control the EMP (emergency management port), you can use VACM on Linux, vacm.sf.net.
—Marc Merlin, firstname.lastname@example.org
Middle Digital, Inc. makes ISA and PCI cards that give headless management functionality to most PC-architecture systems. Telnet to demo.realweasel.com for a live demo, or search the Linux Journal web site for “weasel”.
—Don Marti email@example.com
I am making a program for running lab experiments and examining data, using arbitrarily long command strings with RPN-style syntax. Command recall and editing features, such as those provided by readline, are essential, and the program has to run on a graphics screen. I am leaning toward using svgalib because that will ease the transition from my DOS version and give greater efficiency in graph drawing, but I will consider other implementations. Can you give me some general ideas about how to get my command-line function?
—Bill McConnaughey, firstname.lastname@example.org
Depending on which look and language you're most comfortable with, you're probably going to be best off with a modern GUI toolkit such as GTK+ or Qt. There is more code you're going to be able to borrow there. Also, it's going to be easier in the long run, as displays get bigger, if you ever want to be able to run your program and another program on the same screen at the same time. For example, Ricardo Fernández Pascual has written interesting-looking autocompletion functionality for the GtkEntry widget. His project is called EggEntry and looks general enough to support entering complex commands. See www.geocrawler.com/mail/msg.php3?msg_id=9808742&list=521.
—Don Marti email@example.com
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.Register Now!
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide