From the Editor: May 2005 - Development - Keep Your Options Open
Last time we did a special issue with a focus on software development, we called it the Cross-Platform Development issue. But really, the overwhelming majority of the software that runs on Linux is cross-platform.
Sure, there are some Linux-exclusive tools, like the kernel debugger Kprobes (page 22). But the rest of the stuff in this issue, from Mozilla's Sunbird (page 14) and Firefox (page 86) to the versatile compiler suite GCC (page 78), is all wonderfully choice-preserving. Want to switch architectures? Use a different operating system? Even swap out your company's business model?
One software vendor I know decided to go from being a “pure software play” to a hardware company and pulled it off in a matter of months. There are even companies that will take your software load and turn it into a Linux appliance with your logo and everything, almost as easy as sending in a CD and manual for duplication.
Some OS vendors profit by imposing a high cost of switching away. But in the long run, it's good to have users who can walk away. It makes you stay good at what you do and gives you instant feedback when you slip. Today's Linux users can get the same applications on a different platform with a quick visit to TheOpenCD.org or fink.sourceforge.net. We're not staying on Linux just because we'd lose time or mangle data by switching away—can any proprietary OS say the same?
As a software developer you have more options today than ever. You're not just choosing open source or proprietary or deciding between direct sales or channel. Develop for Linux and you can easily offer your software as download, shrinkwrap, service or appliance. Get started with development before you have to make a final decision on the business model.
Speaking of choices, Greg Kroah-Hartman has a warning for you: don't try to read files in the kernel (page 38). He and the rest of the core kernel team just don't like it. But guess what? You have the freedom to read files in the kernel anyway. So if you have to do it, do it. An OS developer's decision that something is Bad doesn't apply to you.
In conclusion, beware of any technology that has an “evangelist”. If a platform gives you enough choice that you don't have to trust it, it's a good sign that you can.
Don Marti is editor in chief of Linux Journal.
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!
- Doing for User Space What We Did for Kernel Space
- SuperTuxKart 0.9.2 Released
- Google's SwiftShader Released
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