Part of an ongoing series of on open-source geographic information system (GIS) programs, this article offers an introduction to uDig GIS. uDig is for GIS users of all levels, from beginners to advanced.

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The October 9, 2008 edition of Linux Journal Live! Associate Editor, Shawn Powers, and Kyle Rankin, "Hack and /" columnist and author of Knoppix Hacks, Linux Multimedia Hacks, Knoppix Pocket Reference and others, discuss Linux distributions.

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No matter what else you may think of Hugo Chávez (probably bad if you get your information from the U.S.

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eBay is not going through the happiest of times. Not only has it found it necessary to make 1000 people – 10% of its workforce – redundant, it has had to own up to a serious breach of trust with its Internet telephony program, Skype.

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Wildcards in bash are referred to as pathname expansion. Pathname expansion is also sometimes referred to as globbing. Pathname expansion "expands" the "*", "?", and "[...]" syntaxes when you type them as part of a command, for example: $ ls *.jpg # List all JPEG files $ ls ?.jpg # List J

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As if you didn't have enough to worry about, with the stock market crashing and all your savings going south . . . U.S. CERT issued a warning about a new browser exploit called "clickjacking". Worst of all, it even affects Linux browsers. Yikes! Jeremiah Grossman, founder and CTO of WhiteHat Security, U.S. CERT said, "Clickjacking gives an attacker the ability to trick a user into clicking on something only barely or momentarily noticeable. Therefore, if a user clicks on a Web page, they may actually be clicking on content from another page."

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Having recently installed a new version of Linux I thought I'd see how progress on Compiz, the compositing window manager, was going. I tried it first on a system with an ATI video card and was met with a wonderful blank screen. Since I really didn't want to spend a bunch of time trying to figure out what was going on I just put things back to normal and got X working again.

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"The Green Penguin" is a new blog devoted to ‘green’ IT related to Linux (though at times loosely). This week´s topic is about Google and General Electric´s recently announced plan to promote a ‘smart’ electric power grid and thus encourage greater use of renewable energy.

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I respect Richard Stallman for the same reason I respect gravity. The man is a force of nature. He is like the iron core of the Earth: fixed, central, essential. So, when I read a story like "Cloud computing is a trap, warns GNU founder Richard Stallman", which ran in the Guardian last week, I take notice. And I'm not alone. A search on Google for stallman "cloud computing" brings up 142,000 results.

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This article, and the one to follow, are based on a Software Development class I taught a few years ago. The students in this class were non-programmers who had been hired to receive bug reports for a compiler product. As Analysts, they had to understand the software compilation process in some detail, even though some of them had never written a single line of code.

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When your laptop battery is about to give up the ghost, you are probably thinking of the typical three alternatives. The most obvious, of course, is "wow, what a great justification for buying a new laptop". With laptop prices falling and no such luck with battery prices, this almost makes sense. But, most of us will probably just bite the bullet and buy a new battery.

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Free minix-like kernel sources for 386-AT, was the subject of Linus Benedict Torvalds post to comp.os.minix on October 5, 1991 -- seventeen years ago today.

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"Lawyers in the Windows Vista Capable lawsuit against Microsoft want a federal judge to force the company to use Windows Update to notify potential class members of the suit, according to court documents." This is the opening paragraph in an article in ComputerWorld. A number of people, including myself think this is a bad idea.

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The October 2, 2008 edition of Linux Journal Live! Associate Editor, Shawn Powers, and Steven Evatt, Online Development manager for The Houston Chronicle discuss surviving disaster with Linux.

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This is a review of a relatively new resource, called Open Source in the Enterprise (OSIE) by Bernard Golden. The report's raison d'être is to help companies to decide if open source applications are right for their enterprise, and if so, how to implement it intelligently.

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Linux comes with a powerful firewall built-in, although the interface can be a little intimidating. This is the first in a multi-part tutorial on how to master basic and not-so-basic IPTables functionality and create the perfect firewall for your home network.

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If you use bash you already know what Parameter Expansion is, although you may have used it without knowing its name. Anytime you use a dollar sign followed by a variable name you're doing what bash calls Parameter expansion, eg echo $a or a=$b. But parameter expansion has numerous other forms which allow you to expand a parameter and modify the value or substitute other values in the expansion process.

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Says here that Internet radio is about to get a reprieve. We've been covering the fight between the RIAA and webcasters for many years, going back to the DMCA, which left working out webcasting royalties pretty much unfinished.

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As I listen to all this talk of lack of trust in the banking system, of inflated values ungrounded in any reality, of “opacity”, and of “contaminated” financial instruments, I realise I have heard all this before. In the world of software, as in the world of finance, there is contamination by overvalued, ungrounded offerings that have led to systemic mistrust, sapped the ability of the computer industry to create real value, and led it to squander vast amounts of time and money on the pursuit of the illusory, insubstantial wealth that is known as “intellectual property”.

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