Letters to the Editor
Phil, congratulations on a great magazine. Your editorial in the May issue on Open Source is excellent as far as it goes. Using the phrase “Open Source” in lieu of “free” should overcome many of the negative perceptions and biases that business has with “free”. In addition, “Open” has become a very positive buzzword in IT.
However, there is a crucial element missing in all discussions of Open Source. What is the underlying business model that can allow a business to make money? Though primarily a technology magazine (and a good one), Linux Journal could make a major contribution to the Open Source movement with a short article summarizing the business argument for Open Source. This way, those of us in industry can have a succinct response to “Sounds good, but how do I make money?” Obviously, this short article should stay away from MBA gobbledygook and concentrate on principles. A brief case history would be desirable.
Unfortunately, I am not involved in the Open Source industry and thus can't help with such an article. I can continue to persuade mainstream industry to recognize Open Source as viable software.
—David T. Kjellquist email@example.com
I agree, this is an issue that needs to be addressed. Russell Nelson has written a guest editorial describing just such a business model. See it on page 10 of this issue.
—Phil Hughes, Publisher firstname.lastname@example.org
Some time ago I wrote here, asking people if their Linux Journal magazines were arriving in the mail as dog-eaten as mine. It seems some people get their LJ in pristine shape, and this is independent of distance.
Others get theirs in the same shape I do; these people frequently mention that this is puzzling, since they also receive other magazines, which arrive okay. It seems to be only LJ that has problems. This, in fact, is true for me.
Thus, I speculate that the size, page-count, binding method or other variables causes LJ to be susceptible to mangling in the Post Office machinery. I wonder if LJ might consider putting small sticky tabs on some edges of the Journal, to prevent them falling open in Fido Machineries' “Bow-Wow Special Mail Sorter”?
LJ would probably rebel at the suggestion that they send the magazine in an envelope, which, it would seem to me, would be the best preventative measure.
Thanks to all who replied, some with very amusing posts or e-mailed stories.
—Robert Lynch, Berkeley, CA email@example.com
Actually, we have been trying to find a solution to this problem for some time. Our current printer is not able to polybag domestic mail; foreign mail is outsourced and does go out in an envelope. Our cover is now printed on heavier paper. When we find an affordable solution that can be handled by the printer, our readers will be the first to know —Editor
I liked the use of Linux by the Latvian Police force to make a legacy single-user Clipper application available to everyone, although I think the use of DOSEMU is a bit dubious. In the first place, you require a DOS license for each user logged into the system, and second, it is certainly not the most efficient way to run applications. There is a commercial Clipper engine available for Linux (Flagship) which is available for a very modest fee. Using this engine to run legacy Clipper applications instead of DOSEMU should yield better performance with fewer resources and make it easier to evolve the system into something better, perhaps migrating to one of the Linux SQL engines (available both publicly and privately).
—Roger Irwin firstname.lastname@example.org
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