From the Editor: April 2005 - The Linux of Satellites
By the time you read this, TacSat-1 might already be in orbit. We're all in suspense as our cover project prepares to ride the first launch of the new SpaceX Falcon-1 launch vehicle from Vandenberg Air Force Base in California.
TacSat-1 aims to do for task force commanders what commodity hardware and open-source software can do for business managers. With the new satellite capability, commanders in the field will be able to track individual enemy radars and transmitters, and get visual and infrared imagery, with minimal bureaucracy.
It's a high-profile space version of what's been happening on Earth for a long time. Information technology is becoming faster and more responsive to real business needs. Road maps, customer-hostile business models, and anything else that gets in the way are obsolete. In this issue, we're celebrating the projects that don't merely get the job done and more cheaply and reliably, but those that open up new information technology avenues for people who otherwise would be locked out by pointless restrictions.
Have a look at Charles Curley's “Finding Your Way with GpsDrive” on page 50. Unlike a monolithic GPS mapping product, you can combine your choice of maps with public GPS data to get the navigation you need. Yes, you can cruise for wireless Net access and plot it. Please be nice. Meanwhile, if you're worried about other people getting on your wireless network, Mick Bauer has some good news for you in the form of a new security standard and a way to integrate Wi-Fi security with your existing infrastructure. Get started with WPA on page 36.
Paul Barry had a problem converting his data into the promised Microsoft PowerPoint slides. Fire up the “productivity” application? No thanks—not enough time. Run everything through a script and OpenOffice.org, and the job's done and the carpal tunnels in Paul's mouse hand are safe, see page 58. Keeping up with vendors who try to lock in customers with undocumented formats is tough. Thanks, OpenOffice.org.
Sometimes you need to convert a system to Linux, or to a special-purpose Linux distribution, temporarily. On page 54, Daniel Barlow gets you started with modifying Knoppix to create your own personal live CD. Render Farm? BZFlag Zone? The choice is up to you.
Our Web columnist, Reuven Lerner, is celebrating his 100th column (page 22). Thanks, Reuven, for breaking through the wild and woolly mess of the Web to bring us ideas and technology that really work, for Linux users and everyone else. There's plenty of other great technical stuff in this issue, too. But even if you don't use any of the specific advice—which I doubt, considering we could all use a couple more shell tricks, as Prentice Bisbal brings us on page 76—remember the reason why all this stuff is so great. With Linux and the other software we cover, you have the freedom to make your project happen the way you want. See you at the launchpad.
Don Marti is editor in chief of Linux Journal.
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.
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|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|
- The Firebird Project's Firebird Relational Database
- Stunnel Security for Oracle
- My +1 Sword of Productivity
- SUSE LLC's SUSE Manager
- Non-Linux FOSS: Caffeine!
- Managing Linux Using Puppet
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Parsing an RSS News Feed with a Bash Script
- Google's SwiftShader Released
- Doing for User Space What We Did for Kernel Space
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