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Security is an important aspect of the IBM AIX operating system. Follow along with this quick reference guide on AIX user security commands to learn more.

From the article:

AIX provides a vast array of commands to handle user and group management. This article discusses some of these core security commands and provides a list that you can use as a ready reference. The behavior of these commands should be identical in all releases of AIX.

=> AIX security commands

Richard Stallman, founder of the Free Software Foundation published an interesting article on BBC news website. From the article:

To pay so much attention to Bill Gates' retirement is missing the point. What really matters is not Gates, nor Microsoft, but the unethical system of restrictions that Microsoft, like many other software companies, imposes on its customers. But Gates didn't invent proprietary software, and thousands of other companies do the same thing. It's wrong, no matter who does it.

Microsoft, Apple, Adobe, and the rest, offer you software that gives them power over you. A change in executives or companies is not important. What we need to change is this system.

That's what the free software movement is all about. "Free" refers to freedom: we write and publish software that users are free to share and modify.

=> It's not the Gates, it's the bars

Book Your Apple iPhone In India

I've been waiting for Apple to distribute iPhone in India. Now, Vodafone started to accept pre-registration for Apple iPhones in India. I've just sent them text message to book my iPhone. Both Vodafone and Airtel are in the race to sale iPhone. This is a new version of its iPhone, with support for faster 3G wireless networks and faster phone in 8GiB and 16GiB models.

You can be the first to own the *offical* iPhone 3G in India, with Vodafone. And like the
original iPhone, it combines three products in one-a revolutionary phone, a widescreen iPod, and a breakthrough Internet device with rich HTML email and full web browsing. iPhone 3G. It redefines what a mobile phone can do-again. To book your phone visit vodafone website or send text / SMS "IPHONE" to 56789.

Update: Airtel user can pre-order the same via web-interface here.

Misunderstandings of the GPL Licensing is a common issue. It can create problem for both developers and sys admins. Most developers and admin think that they understood all legal mumbo jumbo associated with GPL. You can take the Free Software licensing quiz and test your knowledge of the GPL and LGPL.

Google Data Center Information

CNet has published an interesting information about Google data center and estimates that they have 2,00,000 servers spanned across 36 data centers across the globe. From the article:

On the other hand, Dean seemingly thinks clusters of 1,800 servers are pretty routine, if not exactly ho-hum. And the software company runs on top of that hardware, enabling a sub-half-second response to an ordinary Google search query that involves 700 to 1,000 servers, is another matter altogether.

Google doesn't reveal exactly how many servers it has, but I'd estimate it's easily in the hundreds of thousands. It puts 40 servers in each rack, Dean said, and by one reckoning, Google has 36 data centers across the globe. With 150 racks per data center, that would mean Google has more than 200,000 servers, and I'd guess it's far beyond that and growing every day.

(Fig.01: Google data center [credit:cnet news])

I'm well aware of HA and clustering technologies but this is massive setup with tons and tons of systems. Google uses distributed storage system and other in house developed tools.

Sounds like a great place to work :)

=> Google spotlights data center inner workings

BASH shell is default on many UNIX / Linux systems. There is an interview with Chat Ramney, maintainer of BASH, the Bourne Again Shell. He talke about his experience maintaining Bash and few other things. From the page:

Bash, or the Bourne-Again Shell is a Unix shell created in 1987 by Brian Fox. According to Wikipedia, the name is a pun on an earlier Unix shell by Stephen Bourne (called the Bourne shell), which was distributed with Version 7 Unix in 1978.

In 1990, Chet Ramey, Manager of the Network Engineering and Security Group in Technology Infrastructure Services at Case Western Reserve University, became the primary maintainer of the language.

Computerworld tracked down Ramey to find out more.

=> The A-Z of Programming Languages: BASH/Bourne-Again Shell

Go firefox go :)

Mozilla is aiming to create what may be the geekiest world record ever with its upcoming Firefox 3 browser release. With more than 14,000 improvements, Firefox 3 is faster, safer and smarter than before. Mozilla asking users to pledge to download the next full release of its browser on the day it is available so the release can set a Guinness World Record for the largest number of software downloads in 24 hours.

=> Set a Guinness World Record Enjoy a Better Web (via PCWorld)