AIX Technical Blog
How to develop SMCLI commands for IBM Systems Director
SMCLI (systems management command-line interface) commands are an integral part of IBM Systems Director. They are used to perform many of the systems-management operations that can be accomplished from the IBM Systems Director Web interface. The aim of this tutorial is to introduce you to the basic concepts and steps regarding how to develop SMCLI commands for IBM Systems Director. 15 Dec 2009
UNIX network analysis
You can find out a lot about your network by using a variety of different tools. If you want to understand the layout of your network, where packets are going, and what people are doing, then you need to use a variety of different tools that can help you to build up a picture of your network and what is going on. This tutorial examines techniques for monitoring the traffic and content of your UNIX network and how to read and diagnose problems on your network. 05 May 2009
Solutions for tracing UNIX applications
If you are developing a UNIX application, then you can trace and debug the running application and extract the information you need from it. But what if you want to know what is going on inside a UNIX application and you don’t have access to the source code? This tutorial looks at some systems that enable you to trace the execution of applications and work out what they are doing without having to make any modifications to the source code, and even without having to stop and restart the application. 31 Mar 2009
Install and configure WebSphere Application Server on UNIX and Linux systems
Learn how application servers are used in modern enterprise environments and how to install IBM WebSphere Application Server on UNIX and Linux systems to provide the cornerstone of a robust, well-supported enterprise Web environment. This tutorial also explains how to integrate WebSphere Application Server into the startup and shutdown processes on your UNIX and Linux servers and provides links to many other resources that will help you get up and running quickly with WebSphere Application Server. 22 Dec 2008
Install and configure an enterprise-level Web server
Learn how Web servers are used in modern enterprise environments and how to install and integrate IBM HTTP Server. This tutorial explains why IBM HTTP Server, a key component of IBM WebSphere Application Server, is also an excellent choice as a stand-alone Web server because of its standard configuration and seamless upgrade path for evolving enterprise Web environments. 04 Nov 2008
Using cron to automate maintenance
To leverage round-the-clock computing, tasks must run at all hours of the day. You could punctuate your sleep with waking interludes to log in and run this command or that command on dozens of machines, or you can enjoy your forty winks and turn the work over to the ubiquitous cron, a daemon, or perennial process, to execute commands on a schedule. From very often to every so often, cron happily minds the clock and runs jobs day or night. Learn how to configure and maintain cron, and discover just some of its many uses. 07 Oct 2008
Expand the capabilities of your Tomcat Web server
This tutorial is a must-have guide for any Web or application server administrator. Although the implementations are slightly different from Apache Tomcat and other Web servers, this tutorial breaks down in a logical and concise way many advanced administrative tasks necessary for successfully hosting, deploying, and managing multiple Java 2 Platform, Enterprise Edition (J2EE) Web applications. Learn how to set up, configure, and secure your Tomcat server, and discover tips and tools for advanced deployment considerations. 16 Sep 2008
Install and configure a development Web server in UNIX
Get a detailed, step-by-step approach to installing and configuring a development or test Apache Tomcat server. Along the way, pick up helpful tips on how to build and administer your Web or application server in a UNIX environment. 15 Jul 2008
Building custom language parsers
There are certain things about ANTLR that, if understood, help in faster debugging and provide a fuller appreciation of how the tool works. Learn how to use ANTLR to create smarter parsing solutions. 11 Mar 2008
Building your own memory manager for C/C++ projects
Performance optimization of code is serious business. It’s fairly common to see a piece of functionally correct software written in C or C++ that takes way too much memory, time, or, in the worst case, both. As a developer, one of the most powerful tools that C/C++ arms you with to improve processing time and prevent memory corruption is the control over how memory is allocated or deallocated in your code. This tutorial demystifies memory management concepts by telling you how to create your very own memory manager for specific situations. 19 Feb 2008
Develop with Java and PHP technology on AIX Version 5.3, Part 6: Building the Java business application
Set up a PHP Web interface for the Java(TM) business application using a database created in earlier in this series. The PHP Web interface collects information from users and sends the session data to the Java business application for processing and for a response. 15 Jan 2008
Emacs editing environment, Part 7: Let Emacs help you out
Part 7 of this series shows you why Emacs is the self-documenting editor, and the many ways in which you can take advantage of the help and assistance offered in this editor. In this tutorial, learn about describing keystrokes, commands, and functions. You’ll also read, browse, and search through a complete Emacs reference manual. 13 Nov 2007
Emacs editing environment, Part 6: Customize your Emacs world
This tutorial, the sixth in a series, walks you through some of the useful ways you can customize and configure the Emacs environment. Learn how to change everything about the Emacs environment to your liking, from the behavior of minor modes to the default key bindings. Along the way, figure out how to set variables, make all your customizations automatic with a startup file, save and recall any window and frame customizations that you make, and use the easy customizer that comes built into Emacs. 02 Oct 2007
Emacs editing environment, Part 5: Shape your Emacs view
This tutorial, the fifth in a series, shows you how to manage and manipulate the shape your Emacs session — examine how to partition the Emacs screen, create multiple X client windows for a single Emacs session, and display multiple buffers in each window, dividing the screen with horizontal and vertical divisions. You also learn about mouse window control and characteristics so that by the time you’re through, you can make your Emacs session look and work the way you want it to. 07 Aug 2007
Develop with Java and PHP technology on AIX Version 5.3, Part 4: Building the Java business application
Part 4 of this six-part series shows you how to deploy a Java(TM) business application and database as a Java Web service running on a pSeries(R) system with the IBM AIX(R) 5.3 operating system. 24 Jul 2007
Emacs editing environment, Part 4: Options, registers, and bookmarks
Take charge of your editing session within Emacs and use it to your advantage. This tutorial is the fourth in a series, and shows you three areas of Emacs that control some aspect of the editing session: various command-line options, the register, and bookmark facilities for setting and saving positions and data. Knowing how and when to use these features, and what tricks are possible with them, are important topics in power editing. 17 Jul 2007
Develop with Java and PHP technology on AIX Version 5.3, Part 2: Building the Java business application
It is possible to develop applications that employ both Java(TM) and PHP technology. You can use Java for the core logic (or redeploy an existing Java-based application), while gaining the benefits of PHP as a Web-based interface platform. In this tutorial, the second part of a six-part series, create a simple Java business application and then deploy it as a servlet on the Apache Tomcat application server on a System p(TM) system with the IBM AIX(R) Version 5.3 operating system. 05 Jun 2007
Explore powerful UNIX writer’s tools
Long ago, UNIX(R) had a proprietary package called the Writer’s Workbench (WWB). Developers, administrators, and technical writers who used to use this package in their work deeply miss it — its powerful capabilities made the UNIX workstation a preferred environment for document editing and proofreading. Today, many new implementations of those tools are available for all UNIX systems, and you can also find open source equivalents of the key WWB tools. Discover these tools and learn how to use them, building a custom style guide checker in the process. 22 May 2007
Emacs editing environment, Part 3: Advanced Emacs text operations
This tutorial, the third in a series, builds on what you’ve learned by taking you through a tour of some of the more advanced Emacs features for text operations. You get a hands-on demonstration of advanced editing techniques, including how to perform a recursive edit, mark and use rectangles of text, and handle complex selection techniques using the kill ring and the secondary selection. 01 May 2007
Emacs editing environment, Part 2: Learn the essential modes and editing features of Emacs
One of the powerhouses of UNIX computing, the open source Emacs editor is a large, complex application that does everything from edit text to function as a complete development environment. This tutorial, the second in a series, introduces you to some of the essential concept of modes, shows you some of the powerful text manipulation functions available, and teaches you how to use the built-in search, replace, and spell check facilities of Emacs. 10 Apr 2007
Back up and restore your AIX system, Part 2: Implementing your backup strategy and restoration processes
Explore different recovery options to restore your data. Part 2 of this two-part series shows you how to implement the backup strategy discussed in Part 1. Part 1 covered the importance of backing up your system, the methods available to you through the command line, how to use the System Management Interface Tool (SMIT) to perform backups, and the difference between system data and user data. 27 Mar 2007
Emacs editing environment, Part 1: Learn the basics of Emacs
Master the Emacs editor and delve into the depths of its most advanced editing commands that have made it famous. The open source Emacs editor (one of the powerhouses of UNIX(R) computing) is a large, complex application that does everything from editing text to functioning as a complete development environment. It’s rich in features and is unlike any other program you’re likely to have encountered, especially in the way you specify and input commands. This tutorial, the first in a series, gets you going by providing a concise, hands-on introduction to the most important Emacs editing concepts and features. 20 Mar 2007
Back up and restore your AIX system, Part 1: The when, why, and how of backing up
Take a look at some of the reasons, methods, and tools for backing up your AIX(R) system. As business and data changes at the speed of light, your systems are at an even greater risk of system corruption and lost data. To protect your company’s data, you need to have a solid backup strategy, multiple backups, offsite storage of data, and a fully tested and proven plan of restoring data to your systems. Having a solid backup strategy decreases company downtime. 13 Mar 2007
Using AIX accounting
Accounting has been a part of the UNIX(R) operating system since the very early days. Most variants of UNIX have process and connect-time accounting available. As such, it’s possible to merge accounting records in a heterogeneous environment for billing or monitoring purposes. 28 Feb 2007
UNIX tips and tricks for a new user, Part 4: Some nifty shell tricks
When writing a shell program, you often come across some special situation that you’d like to handle automatically. This tutorial includes examples of such situations from small Bourne shell scripts. These situations include base conversion from one string to another (decimal to hex, hex to decimal, decimal to octal, and so on), reading the keyboard while in a piped loop, subshell execution, inline input, executing a command once for each file in a directory, and multiple ways to construct a continuous loop. Part 4 of this series wraps up with a collection of shell one-liners that perform useful functions. 20 Feb 2007
UNIX tips and tricks for a new user, Part 3: Introducing filters and regular expressions
Discover the power of UNIX(R) filters. In this tutorial, you’ll learn about the grep family in depth, including the syntax of regular expressions in many UNIX utilities. You’ll also find out more about the stream editor, sed, as well as examine the awk pattern scanning language through examples and explanations. 05 Dec 2006
UNIX tips and tricks for a new user, Part 2: The vi text editor
The vi text editor might seem counterintuitive to new users but, make no mistake, there is a good reason this 30-year old tool is still widely used by many of the best developers in the world. The vi text editor separates operations into insert mode and command mode, which gives you ultrafast access to key commands that can edit, insert, and move text in on-the-fly, user-defined segments. 07 Nov 2006
UNIX tips and tricks for a new user, Part 1: File maintenance tools
Systems administrators can use a number of programs to maintain files in a UNIX(R) system from the command line. In this tutorial, you’ll experiment with commands, such as cd, cp, and tar, to navigate a UNIX file system from the command line and work with files and directories. The cd command changes directories, cp duplicates files or directories, and tar quickly groups files into an archive. You’ll also learn how to deal with file permissions and perform simple input/output. 26 Sep 2006
Get started with GAWK: AWK language fundamentals
Discover the basic concepts of the AWK text-processing and pattern-scanning language. This tutorial gets you started programming in AWK: You’ll learn how AWK reads and sorts its input data, run AWK programs, manipulate data, and perform complex pattern matching. When you’re finished, you’ll also understand GNU AWK (GAWK). 19 Sep 2006
Use alternative methods to manage and monitor your UNIX servers
Make your systems and environment easier to use and administer by using tools, such as a Weblog, wiki, and Subversion, to record and track information and changes to your IT infrastructure. During the course of your UNIX(R) administration, you need to store and retain many different types of information and data. There are many ways of doing this, but one of the more radical solutions is to use a variety of free tools for the storage and retention of configuration data, configuration and administration change, and administration events. 12 Sep 2006
Produce device-independent documentation with Groff
Groff (GNU Troff) is the latest open source implementation of Troff, a document-preparation system that generates print and screen documents for various devices from the same input source. Get an introduction to the Groff system and learn how you can use it for preparing your documentation, help systems, reports, or any printed output where professional quality, portability, and support for multiple output formats are desired. 27 Jun 2006
Write text parsers with yacc and lex
Examine the processes behind building a parser using the lex/flex and yacc/bison tools, first to build a simple calculator and then delve into how you can adopt the same principles for text parsing. Parsing text — that is, understanding and extracting the key parts of the text — is an important part of many applications. Within UNIX(R), many elements of the operating system rely on parsing text, from the shell you use to interact with the system, through to common tools and commands like awk or Perl, right through to the C compiler you use to build software and applications. 31 May 2006
Working in the bash shell
Get an introduction to the Bash shell, which you can use on nearly any UNIX(R)-based operating system. Bash is a mature, powerful, yet easy-to-use shell that is freely available. This tutorial provides a brief history of Bash, which indicates how the Bash shell is different than some of the other popular UNIX shells, and also provides an overview of the major features available within Bash. Next, you’ll learn more about the UNIX file system, how to work with both directories and files, and several methods for customizing the appearance and behavior of Bash. Finally, the tutorial concludes with a discussion of the job control functionality of Bash. 30 May 2006
Retool your Linux skills for commercial UNIX
Examine how to best migrate your Linux(R) skills to take advantage of AIX(R) and Solaris. Linux is all the rage, but what if you have experience in Linux and need to apply it to a commercial UNIX(R) environment? UNIX and Linux are similar, and many of the same principles exist; there is a shell, root is still all powerful, and many of the tools and applications are the same. But how do you cope with understanding the nuances and differences? 30 Mar 2006
Expose Web performance problems with the RRDtool
Examine how to determine the root cause of Web performance problems. Without proper measurement, how do you know whether your Web application is performing well? By using open source tools such as the RRDtool, you can graph the key performance measurements of any Web application, use these graphs to determine the impact of changes in the environment, or point to changes that need addressing. 21 Mar 2006
Client/server programming using the Transport Driver Interface (TDI)
Examine implementation details for programming a client/server application at a kernel level using the Windows(R) Transport Driver Interface (TDI). In this tutorial, you’ll get an introduction to the commonly used TDIs, get step-by-step instructions in writing a TDI user datagram protocol (UDP) application, and learn how to port TDI UDP Internet Protocol Version 4 (IPV4) modules to Internet Protocol Version 6 (IPV6). 14 Mar 2006
Write software for multiple UNIX platforms
If you write software for more than one UNIX(R) platform, you are aware of the difficulty of getting your software to compile on two platforms. This tutorial covers tools and tricks that can make the process of supporting different UNIX platforms significantly easier at the code level. The reason is not the lack of tools or a binary compatibility issue, but rather the problems with the header files and functions that set up a standard UNIX environment. 21 Feb 2006
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