Practical Technology

for practical people.

March 15, 2012
by sjvn01
0 comments

The Neutrino Network

With 802.11n, you can see Wi-Fi networking speeds above 100 Megabits per second (Mbps) with a range up to 70-meters. With the just shipping now 802.11ac, you can get more than a Gigabit per second (Gbps) speeds with a range of about 35-meters. 802.11ad, which is still coming together, may give us 7Gbps speed but at a range of only five-meters. Or, if laboratory experiments by University of Rochester and North Carolina State University work out, we may someday be able to use neutrino networks at ranges of tens of thousands of kilometers.

Scientists from the school were able to use neutrinos–nearly massless particles that travel at almost the speed of light–to send the binary message “Neutrino” to a receiver that was just over a kilometer away and that included 240 meters of stone in the way.” Try that with any other wireless technology!

The Neutrino Network. More >

March 14, 2012
by sjvn01
0 comments

Is Ubuntu becoming a big name in enterprise Linux servers?

When you think of Ubuntu Linux, what do you think of? I would guess you think about the Linux desktop. While Ubuntu is certainly a big player—maybe the biggest—when it comes to the Linux desktop, Mark Shuttleworth, founder of Canonical, the company behind Ubuntu wants you to know that “A remarkable thing happened this year: companies started adopting Ubuntu over RHEL for large-scale enterprise workloads, in droves.”

Shuttleworth makes this claim because, according to W3Tech, which surveys technologies used on the Web, shows that since July 2011 Ubuntu has overtaken Red Hat Enterprise Linux (RHEL) for Web servers. According to W3Techs, as of February, “Ubuntu s now used on 6% of all Web servers, up from 4% one year ago.”

Shuttleworth choose Web servers for his benchmark because “Web services are a public affair.” Nevertheless, Shuttleworth claims that “the trend is even starker if you look at what we know of new-style services, like clouds and big data.”

He may be on to something.

Is Ubuntu becoming a big name in enterprise Linux servers? More >

March 14, 2012
by sjvn01
0 comments

Good-bye Encyclopedia Britannica: Good-bye to the printed record

Friends, Romans, countrymen, lend me your ears; I come to bury the print Encyclopedia Britannica, not to praise it. The evil that books do lives after them; The good is oft interred with their bones.”

Oh I could praise it, but what good would that do? After 244 years, dozens of editions and millions of sets sold, no new editions will be placed on paper. We knew this would happen. E-books sales are sky-rocketing and encyclopedia sales have dwindled to next to nothing. Today, the print edition counted for less than 1% of ’s revenue.

True, the Britannica will live on online, but it’s long been over-shadowed by Wikipedia. Its days are numbered.

Good-bye Encyclopedia Britannica: Good-bye to the printed record

March 13, 2012
by sjvn01
0 comments

16 Linux Server Monitoring Commands You Really Need To Know

Want to know what’s really going on with your server? Then you need to know these essential commands. Once you’ve mastered them, you’ll be well on your way to being an expert Linux system administrator.

Depending on the Linux distribution, you can run pull up much of the information that these shell commands can give you from a GUI program. SUSE Linux, for example, has an excellent, graphical configuration and management tool, YaST, and KDE‘s KDE System Guard is also excellent.

However, it’s a Linux administrator truism that you should run a GUI on a server only when you absolutely must. That’s because Linux GUIs take up system resources that could be better used elsewhere. So, while using a GUI program is fine for basic server health checkups, if you want to know what’s really happening, turn off the GUI and use these tools from the Linux command shell.


16 Linux Server Monitoring Commands You Really Need To Know. More >

March 13, 2012
by sjvn01
0 comments

Homeless and wireless at SXSW

When I first read that homeless people were being used as mobile Wi-Fi hotspots at Austin Texas’ South by Southwest Interactive (SXSW) festival, I didn’t believe it. Believe it.

BBH Labs, a self-proclaimed skunkworks innovation branch of the marketing firm Bartle Bogle Hegarty brought Homeless Hotspots, to SXSW they claim, as a “charitable experiment.”It works by giving the homeless 4G Mi-Fi devices. You, a SXSW tech. hipster are then supposed to “introduce yourself, then log on to their 4G network via your phone or tablet for a quick high-quality connection. You pay what you want (ideally via the PayPal link on the site so we can track finances).”

How can you tell if one is within range? By as BBH puts, :as you wander between locations murmuring to your coworker about how your connection sucks and you can’t download/stream/tweet/instagram/check-in, you’ll notice strategically positioned individuals wearing “Homeless Hotspot” t-shirts.”

Excuse me as I throw up.


Homeless and wireless at SXSW. More >

March 13, 2012
by sjvn01
0 comments

Google extends secure search

Over a year ago, a little Firefox add-on program called Firesheep showed just how easy it was to snoop on people on the same Wi-Fi network. Since then, more and more Web sites, like Facebook and Twitter, are securing their Web sites by default. Now, Google is continuing its own push into making its search sites more secure.

Google began late last year by using SSL (Secure Socket Layer) security for signed-in users using Google Search. That means, as some of you have noticed, if you’re signed into Google instead of going to http://www.google.com, you’re ending up at the secured https://www.google.com site. Your search results come back to you, in turn, via a secured HTTPS page.

Google extends secure search More >