Cool as Ice!
Mon Dieu, François! I realize it's a warm day outside, but it is positively freezing in here. Our guests will need coats, in August, no less. What are all these portable air conditioners doing here? Is that frost I see on the windows? François! I shudder—make that shiver—to think what this possibly could be about. Yes, this issue's theme is Cool Projects, but nowhere did it say frozen. And, when our editors said cool, I think they meant it in the sense of “really interesting and exciting”. Never mind. Our guests will be here momentarily, and I don't think they are dressed for this. Quickly, run to Diane's Manteaux de Cuir across the street and beg her to provide us with some coats for tonight. Vite! Our guests are arriving as we speak.
Welcome, everyone, to a very chilly Chez Marcel. Please pardon the cold. My faithful waiter has once again taken a simple idea to its amusing, if somewhat outrageous, extreme. Nevertheless, he will return shortly with warm coats for all. In the meantime, please take your tables and make yourselves comfortable. Ah, François, you have returned with Diane. Thank you, Diane, for your help. While everyone slips into their coats, perhaps François can fetch the wine. There's a case of 2004 Bodegas Muga Reserva from Spain in the lower level of the cellar's east wing.
As François already has set the stage for us, we're going to explore some Linux coolness. The symbol of Linux coolness is, of course, the penguin. Tux, the Linux mascot (designed by Larry Ewing), is a penguin, and penguins show up pretty much everywhere you turn in the Linux world. In fact, you can't go near a Linux system, magazine, T-shirt, mouse pad, coffee mug or book, without running into some kind of penguin. That's okay for most people, because, well, penguins are cute.
Penguins and Linus Torvalds
Responsible for this whole penguin mania is Linus Torvalds, the Linux kernel's creator. When asked what he envisioned for a mascot, Linus replied, “You should be imagining a slightly overweight penguin, sitting down after having gorged itself, and having just burped. It's sitting there with a beatific smile—the world is a good place to be when you have just eaten a few gallons of raw fish and you can feel another burp coming.”
Ah, François, you have returned. Please, pour for our guests. Enjoy the wine, mes amis. This Spanish beauty is very rich, very complex, yet fresh tasting and well balanced. Hmm...make sure you fill my glass as well, François.
The first item on tonight's menu is Matthew Miller's IceBreaker (Figure 1). The premise is similar to events you see every day in the news. A bunch of penguins need to be captured and sent off to Finland. They are all on an iceberg in Antarctica, in an area where global warming hasn't yet started breaking the ice. Penguins, as it turns out, need to travel with ice or they just won't behave. The question becomes, “How much ice?”
As you can imagine, shipping penguins to Finland is expensive, so the order of the day is small ice chunks. When you left-click on the iceberg, a line is drawn across it, separating the two areas of ice. If a penguin hits the line as it is being drawn, your cut effectively is halted. A right-click changes the direction of the cut from horizontal to vertical (or vice versa). To clear an iceberg and move on, you need to clear at least 80% of the ice. Should you manage the job, another penguin is added and you get to start over on the next level.
The more penguins you add, the more complicated it becomes, as they bounce frantically across the ice field. On the off chance that you find this all too simple, there's a menu of options where you can change the difficulty level. Click MENU on the lower right of the screen, and a pop-up menu appears (Figure 2). Not only can you change the difficulty here, but you also can turn sound effects on or off, check high scores and run the game in full-screen mode.
Practical Task Scheduling Deployment
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.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- SUSE LLC's SUSE Manager
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
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