Archaeology and GIS—The Linux Way
On Feb. 1, 1999, Baylor and Hannover simultaneously released the GRASS 5.0 beta. This was the first major upgrade to GRASS in a number of years. The demand was so high that downloads at Baylor accounted for 20% of the entire university Internet traffic. To date, several thousand unique downloads of Linux GRASS have been made from the Hannover site, which is currently transferring 5GB a week. This volume is steadily increasing. A stable release of GRASS 5.0 is planned for early summer—by the time you read this. Currently, bug reports are being collected and fixes applied to the code. The code is also being modified to make GRASS 64-bit compliant.
The most significant new features of GRASS 5.0 are floating-point support in raster format and an improved sites format. Because all raster modules have to be rewritten, this is a major step in GRASS development. For the stable 5.0 version, several other projects are on the list. The NVIZ tool, a robust three-dimensional visualization tool, is currently being ported to Linux and other UNIX systems from SGI to aid in viewing 3-D GRASS data with raster/vector/sites overlaying features (Figure 4). This tool allows users to display 3-D raster data as stacked layers, with raster, vector and sites draped as overlays. It will be a very useful (and much sought-after) tool for data visualization.
To encourage user development of GRASS routines, the GRASS 5.0 programmer's tutorial will be available very soon. In the near future, the growth of GRASS will include introducing a new vector format. This is part of the long-term plan to continue the evolution of GRASS to a true 3-D/4-D GIS system. It will incorporate an improved 3-D raster format and new 3-D vector formats.
A friend recently summed up the future of GRASS and Linux quite well. He was leaving a research position to go work for a state agency using their expensive off-the-shelf GIS and remote-sensing packages; however, he had also worked with GRASS on a Sun box. Before he left, he sat down with me to get some information on setting up a Linux box on his office Wintel machine. As he said, “I need to be able to get the real spatial work done on a stable platform that is not going to crash; those commercial packages on Wintels are just too buggy.” When I sent him a copy of this last paragraph now that he has been in the office for some months, he responded, “You can say that again and again and again....” One more sign that the Linux juggernaut continues on its way into the workplace.
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