| Ten technical articles from IBM -- Linux, grids, wireless PDA apps, ssh, . . . |
Jul. 17, 2003
IBM has published the following ten technical articles and tutorials on its developerWorks website. They cover a range of interesting (though not embedded) technical topics. Some require free registration. Enjoy . . . - Grid computing: What are the key components? -- Grid computing is gaining a lot of attention within the IT industry. Although it has been used within the academic and scientific community for some time, standards, enabling technologies, toolkits, and products are becoming available that allow businesses to use and reap the advantages of Grid computing. As with many emerging technologies, you will find almost as many definitions of Grid computing as people you ask. However, one of the most used toolkits for creating and managing a grid environment is the Globus Toolkit. This article provides an overview of the key components that make up a Grid environment, and most of the information and concepts within the context of the Globus Toolkit.
- Should your application be on the Grid? -- A Grid computing environment provides the virtual computing resource that will be used to execute applications. The functional components(security, resource managament, informations services, and data managament)of a grid environment, as well as non-functional considerations such as performance requirements or operating system requirements, must be well understood when considering enabling an application to execute in a grid environment. This article helps you determine whether an application is a good candidate to execute in a grid environment.
- Blueprint for Linux wireless PDA-based business apps -- This article presents an architecture blueprint for building a wireless e-business solution that seamlessly integrates into the existing e-business infrastructure. Combining the efficiency and power of Linux with wireless computing solutions, you will be shown how to provide people convenient access to relevant information and the ability to act on that information anytime, anywhere.
- Graphics tricks from the Linux command line -- There's nothing quite like command-line tools for handling large batches of tasks, and image manipulations are no exception. Web developers and administrators will appreciate the ability to handle large numbers of files easily, either at the command line or in scripts. This article presents the ImageMagick suite, a Linux toolkit for sizing, rotating, converting, and otherwise manipulating images, in a huge number of formats, whether one or a hundred at a time.
- Open Source reflection for wicked command line arguments -- Command line argument processing is one of those nasty chores that seems to keep coming around no matter how many times you've dealt with it in the past. Rather than writing variations of the same code over and over, why not use reflection to simplify the job of argument processing? This article outlines an open source library that makes command line arguments practically handle themselves.
- Server clinic: Connect securely with ssh -- You'll undoubtedly want to use ssh to work on your servers from remote sites, but it takes an assortment of tricks to keep progress rolling smoothly. While the ability to work remotely has always been one of the Linux advantages system programmers and administrators have most enjoyed, setting up for remote access takes more than one simple recipe. This article will show you, with the proper use of ssh, neither distance nor firewalls need keep you from your servers.
- Functional programming in Python becomes lazy on Linux -- This article explores the new Python 2.3 itertools module, and gives you a sense of the new expressive power available with combinatorial iterators and how iterators -- conceived as lazy sequences -- are a powerful concept that opens new styles of Python programming.
- Gentoo's Daniel Robbins preps you for LPI certification 101 -- In this new tutorial, Daniel Robbins, President/CEO, Gentoo Technologies begins preparing you to take the Linux Professional Institute's Exam 101 Release 2. In this first in a series of four tutorials, Daniel introduces you to bash (the standard Linux shell), shows you how to take full advantage of standard Linux commands such as ls, cp, and mv, explains inodes and hard and symbolic links, and much more. By the end of this tutorial, you'll have a solid grounding in Linux fundamentals and will be ready to begin learning some basic Linux system administration tasks.
- High-impact Web tier clustering with JavaGroups -- Commodity machine clusters can provide a scalable and highly available platform to deploy Web application and Web services. The networking software required for such clusters, however, is often custom to the specific application and can be daunting to write and test. This article shares how JavaGroups, an open source distributed systems toolkit, can help by providing ready-to-deploy, high-level features such as: group membership management, multicast and unicast message-based group communications, state transfer protocol, functional distributed data structure, and a library of reusable, frequently used communication coding patterns.
- IBM releases Linux WebSphere SDK for Web Services -- V5.0.1 -- The free WSDK v5.0.1 download includes: An embedded version of IBM WebSphere Application Server - Express, V5.0 with additional support for ORB and EJBs. WSDK supports SOAP 1.1, WSDL 1.1, UDDI 2.0, JAX-RPC 1.0, EJB 2.0, Enterprise Web Services 1.0 (JSR 109), WSDL4J, UDDI4J, and WS-Security. It comes with the IBM WebSphere UDDI v2.0 registry, an entry-level database providing a JDBC implementation, the IBM SDK for Java Technology, version 1.3.1, and tools to expose JavaBeans and stateless session EJBs as Web services. Also included are code samples showing how to: expose JavaBeans and stateless session EJBs as Web services, code to create Web services from WSDL definitions, examples of publishing/unpublishing and lookup of Web services using UDDI, as well as code to create secure Web services using the WS-Security specification.
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