Economy Size Geek - Adventures in Scanning
It was a little disappointing that I couldn't get the buttons on the scanner to work, but that ended up being the only roadblock in the whole process. The main lesson is to get the driver for your scanner, then worry about the rest. Scanning under Linux has improved a lot since I last played with it, and I'm really excited to take something off the list of things I have to do on another operating system.
Updates for Previous Columns
Updates on Qimo:
My instructions for getting Qimo to use more modern packages were not detailed enough [see “A Desktop for Our Little Penguin” in the February 2010 issue]. Unfortunately, the original computer I built died before I could get the files off the drive. The good news is that Qimo 2.0 should be out by the time you read this. That version will be in sync with Lucid (10.4) and save you a lot of hassle.
Updates on APT Caching
Eric Cooper, the author of Approx, contacted me about my comments that his software did not handle multiple computers at once [see “Installation Toolkit” in the March 2010 issue]. He pointed out that the criticism might have been from an earlier version. The current version of Approx uses inetd/xinetd, so they do not suffer from that limitation. That means you have several good choices for caching packages on your network! Sorry for the mistake Eric. That's what I get for reading a blog and being in a hurry.
SANE—Supported Devices: www.sane-project.org/sane-supported-devices.html
Bug Report: ImageMagick crashes when using adjoin to make a multipage pdf (karmic): https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/551484
Raimar Sandner's Ubuntu Karmic ImageMagick: convert jpg to pdf segmentation fault: homepage.uibk.ac.at/~c705283/archives/2010/03/19/ubuntu_karmic_imagemagick_convert_jpg_to_pdf_segmentation_fault/index.html
Bug Report: scan utility should now be simple-scan: https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/539015
Dirk Elmendorf is cofounder of Rackspace, some-time home-brewer, longtime Linux advocate and even longer-time programmer.
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