Put the World in Your Pocket with Marble
Marble became well known as an educational desktop globe along the lines of Google Earth. After all, it was developed as part of the KDE Education Project. However, Marble's 1.0 release, part of KDE Software Compilation 4.6 released earlier in 2010, has brought both its navigational features and mobile interface to maturity, and the developers now prefer to say that Marble is the free software that lets you “explore the world and find your way”.
Even when work on Marble first started, Torsten's goals were ambitious: to produce a map widget that would “become for geo-browsers what KHTML/WebKit is for Web browsers”. The aim always was very much more than just the production of an educational globe. Torsten explains: “We took the education focus as a starting point, and since then, we have explored more and more use cases and have widened our scope.”
Marble also has found a place in many other applications, from scientific mapping and weather-tracking applications to photo management, sensor data visualization and even Linux distribution installers. It goes beyond Earth too, with map data for the moon and solar system planets available for download.
For Dennis, the development of Marble into a mobile navigation system has fulfilled a long-felt need: “My wish to use a free navigation assistance goes back quite some years. I started to look into open-source navigation solutions, but the software available at that time wasn't really capable of what I wanted.” Nonetheless, he began contributing to Marble. “Once I had an N900 and heard that there was a Marble port for the N900 already, the idea pretty much was there.”
So, what is Marble now, an educational desktop globe or a personal navigational tool? For Dennis, the answer is easy: “To me, they are not contradictory—it is both, and even more.”
Stuart Jarvis is a scientist and member of KDE's Marketing Working Group. Lacking a Marble-capable smartphone, he spends a lot of time getting lost in unfamiliar places.
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.
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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