Even this en route…Vinil Menon's blog

Technology for the masses?

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There are interesting challenges in applied computing. One such perspective comes from Mary Lou Jespen who is the CTO of “One Laptop Per Child” project. Her interview is an insightful read into the kind of problems one might face when bringing laptops to those 5 billion people in the world who are more concerned with procurement of their next meal than the features on an cell phone or the rising costs of crude-oil making them shell out more for a joy flight over the city in their water-plane. I found the problems in designing such a collaborative computing system as mentioned in the article quite interesting. However the interview had an impact on a deeper level too, especially this statement "Normally, the industry designs IT systems for the richest 1 billion people…"

I recently read Bill Gates Harvard commencement address and that had a similar statement "At the same time, for every person in the world who has access to this technology, five people don’t." The "this" in the statement refers to a network of low-cost personal computers (aka the internet.)

 

That’s a profound thought.

Written by vinilm

April 4th, 2008 at 10:28 pm

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Recent Posts Popfly block

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Added a Recent Posts Popfly block to the blog courtesy John Montgomery’s blog post and Adam Nathan‘s block :)

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Written by vinilm

April 2nd, 2008 at 11:09 am

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Switching among network profiles

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If you are on the move, connecting to various networks which have DHCP disabled is a pain. The alternate configuration option in the TCP/IP properties dialog too doesn’t work always as expected. Time to call up our swiss-army knife of network tools in WinXP — netsh [1]

A unique command, netsh is a veritable goldmine of settings and one of the options allows setting the TCP/IP properties. To set a static IP address, subnet mask, default gateway I used

netsh interface ip set address name="Wireless Network Connection" static 10.1.2.40 255.255.255.0 10.1.2.1 1

Where "Wireless Network Connection" is the name of the connection as per "Network Connections" in Control Panel. (Shortcut: Start-> Run "ncpa.cpl"), 10.1.2.40 is the IP address that I want to set it to, 255.255.255.0 is the subnet mask, 10.1.2.1 is the default gateway and the last one sets the gwmetric (the metric for the default gateway.)

To set the dns servers; netsh interface ip set dns name="Wireless Network Connection" static 10.1.2.10 primary

To set the interface back to dhcp I used

netsh interface ip set address name="Wireless Network Connection" dhcp
netsh interface ip set dns name="Wireless Network Connection" dhcp primary

I created cmd files with the network settings and have placed them on my desktop. This way, I can simply double-click on them to set the Network Profile that I need to use.

It is a pleasure to work with a command that lends itself to easy learning.

 

[1] The TCP/IP Swiss Army Knife is a tool called netcat.

Written by vinilm

March 25th, 2008 at 7:35 am

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