A screen shot tour of Red Hat Enterprise Linux 4.0

All major Linux distributions include a lot of free software applicationsand libraries, which turn Linux into a powerful desktop or server.

Red Hat in particular has done a great job in including numerous applications and libraries which work right out of the box, without much tweaking required.

This is a screenshot tour of Red Hat Enterprise Linux 4.0.


Terminal Server Client

Terminal Server Client for connecting to Windows ServersTerminal Server Client for connecting to Windows Servers

Accelerated X flame wars!... Maybe not

An advantage to free software is that it is an environment where competition can thrive, choice is always available and different solutions exist for the same problem. However, it’s also fair to say that free software is disadvantaged where competition breeds, choices are forced on unsuspecting users and diverse technologies fight each other.

Secure your email communication with free software

Email is one of the most common activities we perform on the internet. However, email is also one of the most vulnerable internet services currently used. Email spam is common, but what most people are not aware of is that email identity theft is common as well. There is also continuous concern over the privacy and security issues surrounding the matter. However, most users dismiss security software as complex and still continue to send email messages with very little or no regard at all to security.

Hardening Linux Web Servers

Security is a process, not a result. It is a process which is difficult to adopt under normal conditions; the problem is compounded when it spans several job descriptions. All the system level security in the world is rendered useless by insecure web-applications. The converse is also true—programming best practices, such as always verifying user input, are useless when the code is running on a server which hasn’t been properly hardened.

A beginner’s introduction to the GNU/Linux command line

So you have decided to try a free software operating system such as GNU/Linux, congratulations. GNU/Linux is not that different from other operating systems on the surface. You point and click using the mouse and call down menus to get programs to work.

However, these icons and windows are just the sweet candy coating on top of a much older system, a system of programs designed to be accessed by the command line.

Sun Ultra 3 Mobile Workstation review

Sun have made some headlines in recent months through the release of their Ultra 20 workstation and a number of new servers based on the AMD CPUs. For some this is seen as major change of direction for a company that is well known for the use (and continued interest and development) of the SPARC (Scalable Processor Architecture) CPU. With so many new machines being based on the AMD CPU it will be surprising to some that Sun’s new mobile units are based on SPARC technology.

What is X?

Everyone likes pretty pictures. The newsagent’s stand is now crowded with glossy magazines, roadside advertisements glare out at you as you drive along the freeway, you see a wondrous mosaic as you look at all the packaging on supermarket shelves. Television long ago replaced the radio as standard home entertainment and the fact that you cannot judge a book by its cover doesn’t prevent the vast majority of the human population from doing so. The same applies to computers now.

GRUB tips and tricks

The GRand Unified Boot loader, or GRUB, has all but replaced the default boot loader on many GNU/Linux distributions. It includes some conveniences over LILO, the LInux LOader. One advantage is not having to remember to run /sbin/lilo every time you make a configuration change. It also can function as a boot loader for removable media such as floppies, CD-R/W and USB flash memory keys. It is short-sighted to view GRUB only as a boot loader to be installed on a hard drive of a GNU/Linux system.

We can all finally install

I’ve seen a lot of new users—and even kids—using Linux comfortably. And everything goes fine—until they decide to install new applications.

You see, in Mac people can install an application by simply downloading it, copying it wherever they like, and double-clicking on it. In Windows, it’s a matter of running an ugly installer, answering a few questions, and letting it copy a zillion files all over the place.

In Linux... it depends.

Introduction to Zope

Zope is a web application server, similar in concept to proprietary products like Cold Fusion. However, it is free software that is available under the GPL-compatible Zope Public License, which is very similar to the BSD License. Zope was designed with the specific goals of creating a powerful, secure framework for the development of robust web-based services with a minimum of effort.

Mozilla: a development platform under the hood of your browser

This article compares two development platforms: Java and Mozilla. The object of this comparison is not to establish which one is best, but rather to measure the maturity, the advantages, and the disadvantages of Mozilla as a platform from the point of view of a Java programmer (as I am).


The term emulation means to either equal or exceed something or someone else. As computer jargon, however, emulation means recreating another computer or console’s operating system on another system; e.g., recreating a Nintendo Entertainment System on your Sega Dreamcast so you can boot up a _Super Metroid _ROM, or playing classic arcade games like _Ms. Pac-Man _or _Omega Race _on your Gameboy Advance SP. Certainly, neither Nintendo nor Sega ever meant for their systems to be used for such purposes.

Working together and sharing code with TLA

If you ever worked on a free software project or if you have ever worked as a developer, you probably know that managing source code, patches, and software release cycles is not the easiest task to perform. Things get even worse if lots of people are working on the same project: more code to manage, more people to coordinate, more patches to integrate and mainstream. Even if you don’t write software or have never worked on such projects, I’m sure that as an addicted computer user sometimes you felt like “hey, why didn’t I make a backup of that document”, or “hell...

Switching to free software—system administrators

You are a system administrator for a small company—the captain of the firm’s computers. Doing your job well means that you may sail through the seas of information technologies unhindered, in short, the company’s IT infrastructure will stay in place. Should you mess up you will find that the email has stopped working, the web surfers are stranded and you have pinned your ship on the reefs and rocks that scatter the virtual world, or in other words, the company will not be functioning well and you be burning its money.

XMLStarlet: a Unix toolkit for XML

XML is everywhere. A quick Google search shows more than a 100 Million articles about the subject. The XML proponents gush about its ability to provide structure and yet remain human readable. The XML critics are quick to mention that XML is so verbose that being human readable does not necessarily make it human comprehensible. Both sides are correct. Yet, despite the ongoing arguments, XML is already integrated into many software products and the rate of adoption is still on the rise. And that means that you need to learn tools and techniques that will allow you to use XML effectively.


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