Archive for category Technology

How to assign a static IP in Ubuntu OS?

First of all, you want to run the following command in CLI mode: ifconfig. “ifconfig” will show you all the interfaces on your server. You are expected to see a loopback interface & either a single or multiple Ethernet interfaces depending on the server specs. By default, the Ethernet interface or interfaces are set to DHCP. Once you have figured out which Ethernet interface you want to change the IP address on. Go ahead & enter the VI editor mode by typing in the following CLI  mode command:

sudo vi /etc/network/interfaces

Now edit the interface as follows (the below-mentioned is just an example & you would obviously have to replace these parameters based on your local subnet 🙂):

auto eth0
iface eth0 inet static
address 10.10.10.1
netmask 255.255.255.0
network 10.10.10.0
broadcast 10.10.10.255
gateway 10.10.10.1

Once you are done making the changes. Type in “:wq” to save (write) the file & quit the VI editor. Now verify the change by typing in “ifconfig“.

In some cases you may have to re-initialize the networking module. You can do so by typing in the following command:

sudo /etc/init.d/networking restart

Congrats!!! You have now successfully assigned a static IP to an Ethernet interface.

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Harvard Business School – Leadership Excercise!!!

I was reading an article on Harvard Business School’s website regarding an excellent Leadership Exercise. The whole point of this excercise is to come up with Six Words that define your Career/Personality. Here is what I came up with:

Seek Knowledge. Take Chances. Inspire Others.

Now the question is how would you define yourself in Six Words?

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Black Hole

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Biometric System – Type I & II Errors

Biometric System is referred to as a phenomenon whereby human traits such as finger prints, palm scan, voice patterns, retinal/iris scan, etc. are utilized & analyzed for identification purposes. Biometric System (aka Biometrics) provides a solid identification platform since it compares identification/authentication against physical human traits stored in a Computer System (Database). Just like any other technology; Biometrics has its drawbacks as well. Two of the most common drawbacks I would like to point out here are the following:

  • Type I Errors: These types of errors occur when a person with valid identification/authentication credentials gets rejected. This error occurs when the Biometric System is calibrated to be highly accurate. Type I Errors are most common in Top Secret facilities/organizations since they can’t afford Type II Errors. Now this begs a question: What are Type II Errors? I am glad you asked. Read below 🙂
  • Type II Errors: These types of errors occur when a person with NO credentials get access. This is a very serious issue. That is why its very important that the Biometric System be calibrated with quite precision keeping a delicate balance in mind.

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Power of Brain Waves!!!

All of you have to do is think & computer will do the rest. Now that is Future of Technology. Science Fiction turned real: University of Wisconsin-Madison (Department of Biomedical Engineering) has built a Brain Wave recognition device that is capable of reading Brain Waves & translating them into an action. For more information click here: NITRO Lab

Check out the following video to see the above in action:

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Did You Know?

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What Type of a Geek Are You?

56-geek-types

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