An Appetite for Discovery
Finally, why not join in the greatest adventure of them all: SETI, the Search for Extraterrestrial Intelligence? Your Linux system is ideally suited to this task. Since you are running a true multi-user system, it is possible to have a setiathome process running in the background (reniced so it doesn't draw too heavily on your system resources). Who knows? You may be the one who decodes the first signal from a distant civilization, like California—I joke, seulement, non? Nevertheless, visit the SETI@home pages, register as a SETI explorer, download your client and do your part in exploring what may be humankind's most exciting new frontier. [You can join the Linux Journal Reader Group too.]
There is no compiling or linking to do. You simply download the client and untar it. For instance, I downloaded the 2.4 version of the client. After untarring the bundle, I renamed the directory (you will see why) and ran the client from there.
tar -xvf setiathome-2.4.i386-pc-linux-gnu-glibc2.1.tar mv setiathome-2.4.i386-pc-linux-gnu-glibc2.1 setiathome cd setiathome ./setiathome
You can also launch the program from a crontab (as I do) and just leave it running in the background. Here is my crontab entry:
0 * * * * cd /root/setiathome; ./setiathome\ -graphics<\n> -nice 19 > /dev/null 2> /dev/nullCurrently, SETI@home runs with a text-only client, but the latest version also comes with an experimental “screensaver mode” program called xsetiathome. The -graphics option in the crontab above is required if you wish to use this experimental “xsetiathome” GUI front end. Even before this GUI feature was added, Linux SETI users were creating their own GUI clients to give setiathome a friendlier face. One of my favorites is still TkSETI from Rick Macdonald. You can download TkSETI from www.cuug.ab.ca/~macdonal/tkseti/tkseti.html. One of the things I like about it is the ability to check my progress against my other friends who run SETI@home. At this moment, Chef Marcel's lovely wife, Sally, is way ahead, but François is way behind.
Oui, mes amis, it is that time again. I hope you enjoyed the items on today's menu and that you will find yourselves exploring other tasty avenues on your own. In the meantime, it is a clear night and Chef Marcel has the telescope set up out back. If you wish to join me, François will pour you a final glass of wine and we will savor the Chablis while we search the heavens. Join me again next time at Chez Marcel. Bon Appétit!
Practical Task Scheduling Deployment
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.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
- Google's SwiftShader Released
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