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September 26, 2007

Google's flight sim takes off

I've just been flying round central Wellington and accidentally crashed into the Caketin -- oops, I mean the Westpac Stadium. This courtesy of Google's latest time-waster, the flight simulator in Google Earth.

Seems this was, till very recently, a secret addition. But the secret's out now. Download the latest version and you'll find it in the menu under Tools, or just hit Ctrl+Alt+A to get started. The keyboard controls are here, though it works even better with a joystick.


September 25, 2007

Pssst! Wanna buy a real cheap laptop...?





Fancy a laptop for US$399? How about two for that price? Then start counting down the days to November 12...

In an effort to kick-start the One Laptop Per Child (OLPC) project -- a scheme designed to make rugged, low-cost computers available to children in developing countries -- the organisers are promoting a "give one, get one" scheme to potential First World users. For a fortnight from November 12 you'll be able to buy two laptops for US$399. One will be sent to you w
hile the other will go to a child in a developing country.

I think it's a brilliant scheme and have already put my name on their mailing list. And that's not just an act of charity. (Or because the wee beastie runs Linux.) I really believe there's a market for simple-to-use, low-cost computers. A huge market. I mean, what do most people use a PC for? Email, web browsing, instant messaging, word processing... and... um... that's about it. So why do we need all that expensive complexity when a cheap "appliance" would do the trick?

I'm no audiophile. I just like to drop in a CD and hit the Play button. You're probably the same. Yet people in the computer industry seem to forget that's how most folk in the real world would like to use computers. They just want to switch-on and go.

And the OLPC's XO Laptop -- to give it its official name -- ain't no turkey. "The XO laptop can do many things that a $1000 dollar laptop can not. For instance, the XO’s screen can be viewed as clearly as a newspaper in broad daylight. Also the wireless range of the XO is several times longer than your average laptop. Plus the XO laptop does not have any mechanical parts like a fan or a hard drive, which are by far the most common source of hardware failure in a laptop. The XO is more rugged, resistant, and power efficient than any computer on the market today."

What's more it can be recharged by solar cells, or foot-pump or pull-string powered chargers. Oh, and it's waterproof too.


September 19, 2007

Hidden Linux : Filelight

 The easiest way to check on disk space usage in Linux is to do a df -h command in a console window.  df (Disk Free) lists all physical and virtual devices currently mounted on the system, their size, and the amount of space allocated and consumed. (The -h option turns df´s default output -- normally 1K blocks -- into the more human-readable MB and KB format.) Unfortunately it doesn't tell you where all the space has gone.

The Konqueror web browser/file manager has a crack at this problem with its file size view mode (Views / View Mode/ File Size View), but the result -- to my mind -- is barely intelligible. Here, for example, is how it views my /lib directory...




Sheesh, what a mess! Thank heavens then for Filelight. Here's it's view of that same directory...




Wow, much more intuitive! And what´s more, as you move the mouse pointer over the display, file details are highlighted on little arrowed stalks...



Read more about it from the Filelight handbook:

The filemap is a series of segmented-rings that expand from the center. Brightly coloured segments are directories, grey segments are files. Segments are sized in proportion to their filesize. Segments can be nested, so for example, /home/mxcl will be one level outwards and within the bounds of the segment representing /home. Segments are labeled and hovering the mouse over segments will give you more details of that segment and its child segments.

You can open directories with Konqueror or Konsole using the context menu for that segment. Middle clicks open files by mimetype, so images with Kuickshow. You can right click the central circle to get a context menu for the scanned directory. Left clicking segments will re-center the map on that segment.


Having just used Filelight to rapidly reclaim almost 20GB of disk space from unused and long-forgotten files on my system, I have only one verdict: Awesome!

Use your regular package manager to install Filelight, or visit www.methylblue.com/filelight


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September 17, 2007

Vista: The verdict

Jim Louderback, until recently editor-in-chief of the prestigious PC Magazine in the US, used his last editorial to speak the unspeakable. After more than 15 years a devoted fan of Microsoft, he's considering giving up on the operating system. His reason? One word: Vista.

"The upshot is that even after nine months, Vista just ain't cutting it. I definitely gave Microsoft too much of a free pass on this operating system: I expected it to get the kinks worked out more quickly. Boy, was I fooled!"

Amongst the "kinks", Louderback lists a sleep mode that won't kick in or, when it does, won't wake up again, network obfuscation, random connection problems and mysterious network dropouts. ("I've configured every PC on my home network to share drives and printers, yet owing to some undiscovered element, there's no guarantee that any of them will be visible at any given time.")

He concludes, "I could go on and on about the lack of drivers, the bizarre wake-up rituals, the strange and nonreproducible system quirks, and more. But I won't bore you with the details... If Microsoft can't get Vista working, I might just do the unthinkable: I might move to Linux."


September 11, 2007

ComCom Comedy


The latest Commerce Commission quarterly Telecommunications Key Statistics report is out, and frankly the figures are a joke. New Zealand continues to languish at or near the bottom in both fixed line and mobile phone charges (figures below) with little prospect of improvement.

Honourable mentions: TelstraClear's HomePlan, Talk 24/7 plans for fixed line high residential users were the only ones cheaper than or equal to the OECD average.

Dishonourable mentions: Telecom's Go Prepaid Mates' Rates mobile package came out at 198% of the OECD average price. With mates like that, who needs enemies? And users of Vodafone's Base 20 and Base 60 packages shouldn't feel too smug. While they ranked close to average, here's what the ComCom had to say about them: "Vodafone’s Base 20 plan has an extraordinary number of restrictive conditions, including a two year contract term, heavy early termination penalties, no handset rebate and no international roaming, which is likely to make it unattractive to the vast majority of mobile phone users." And Base 60 "has the same restrictive conditions as the Base 20 plan."






September 5, 2007

Farewell spam?


...and on the fifth day of the ninth month of 2007 the tide of spam did cease and the multitude were glad thereof. Yeah, right! But today is the day the Unsolicited Electronic Messages Act comes into effect.

What effect is it likely to have? Not much, according to Bruce Simpson: "...don't expect a bunch of half-arsed, poorly thought out, unlikely to be upheld bunch of red tape is going to slow down any real kiwi spammer or any of the idiots from GodZone who pollute your mailbox with ponzi schemes."

According to Computerworld, a series of bureaucratic wrist-slapping wet bus tickets have been prepared: "The [Department of Internal Affairs Anti-Spam Unit] encourages voluntary compliance with the act, but if someone carries on spamming that business or individual will receive a formal letter saying the spammer is breaching the act. The next step is a formal warning and, if that doesn’t work, court action will eventually be taken..."

Would it be churlish to wonder just were those formal letters will be sent? The spam I get doesn't seem to have physical addresses attached.

There are provisions for fines of up to $2,000 per infringement, but with the vast bulk of spam coming from offshore, don't ditch SpamAssassin yet!

September 1, 2007

Browser betrayals

Most people don't realise how  their browsers betray them. It's not so bad at home, but in a work context it could cost you your job.

Yeah, yeah, you're not supposed to be surfing, you're supposed to be working. But who's going to know, right? Actually, practically anyone in the office. All they need to know is what to click. Try this: left-click the little arrow head beside the address bar and you'll get a comprehensive list all recently entered addresses...



Then there's my old favourite, the History bar. Hit <Alt + H> on most browsers and you'll get a comprehensive listing of every site visited in the last three weeks...



Both tools are occasionally useful if you've forgotten an important address, but if you're using a work PC they're also useful to your colleagues -- and the boss. You might think you're being discreet signing in to TradeMe or Facebook when no one's looking, but your browser's faithfully recording each and every visit.

(Of course if you're using a work PC, every address you visit's almost certainly being recorded by network software too. But that takes a little effort and expertise to obtain. Browser betrayals are available to anyone with access to your PC.)

Still, there are a couple of things you can do to be a little more discreet. Change the History settings for a start.You'll find them under Tools / Options / Privacy in Firefox and Tools / Internet Options in Internet Explorer.



I mean to say, do you really need to record details of three weeks of web activity, everything you've downloaded and the stuff you enter in forms and the search bar? I'm sure you boss'd be interested too!

Firefox has a brilliant privacy extra, the Always clear my private data when I close Firefox option in the same window as the History settings...



Hitting the Settings button gives you even finer control ...



When it comes to browser betrayals, you can't be too careful!

(Footnote: All screenshots are from Firefox 2.)
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