First UNIX/Linux National Competition Held in Ljubljana, Slovenia
Thirteen competitors entered this year. They had 90 minutes to solve all exercises using pencil and paper. They were allowed to use all available literature, but did not have access to a computer to test their solutions. Therefore, the committee decided to judge favorably all solutions exhibiting the correct ideas, even if they were not written syntactically error-free. After reviewing all submitted solutions, the committee decided to award prizes to the following three contestants:
The average quality of the submitted solutions suggests that despite all the publicity Linux received during the last year, high school students are not particularly familiar with the tools from the UNIX/Linux programming environment. This is a pity, since we believe that the many strong scripting languages and modular tools are one of Linux's advantages over its competitors.
The analysis of the anonymous questionnaire which the competitors were asked to fill in also yielded some interesting results. The competitors were asked questions about their own computing environment, to classify the exercises on a scale of 1 to 5 from “easy” to “difficult” and to give suggestions. Some found the limit to scripting languages too restrictive. An interesting response came from a competitor who considered the exercises would be simple “provided that C or C++ could be used”.
This calls for a comment. Every exercise is easiest to solve in a language one is familiar with. Anybody familiar with both C and some scripting language would probably agree that these exercises can be solved in the latter with much less effort. This was intentional. What wasn't intentional is that we discovered the fact that high school students hardly touch on any scripting language at all and are thus unaware of their benefits. Rapid prototyping, for example, is quickly and easily accomplished from readily available tools. This is a complement rather than a replacement for the compiled languages. If speed is truly important, a successful prototype is normally followed by a compiled version, usually distinguished by much faster execution. In practice, both approaches coexist, while in our schools, one seems to have a complete dominance.
Last but not least, the title of this competition also probably deserves a comment. UNIX, or Linux in its narrower sense, denotes the operating system kernel. Kernel-level exercises were not part of this competition and, given the limited time and resources available to competitors, would not be feasible at this moment. It would be honest to admit that in the trade-off between short and catchy names and long and precise ones, we have leaned towards the former. Who knows—perhaps the extra room we have created for ourselves will even prove useful at some later time.
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!
- SUSE LLC's SUSE Manager
- My +1 Sword of Productivity
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Non-Linux FOSS: Caffeine!
- Managing Linux Using Puppet
- Doing for User Space What We Did for Kernel Space
- Tech Tip: Really Simple HTTP Server with Python
- SuperTuxKart 0.9.2 Released
- Parsing an RSS News Feed with a Bash Script
- Rogue Wave Software's Zend Server
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