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Opening and closing ports on EC2 instances

Assuming that the EC2 tools have been installed like described in a previous post, opening and closing ports is done with the ec2-authorize and ec2-revoke commands respectively. These commands work on security groups rather than on instances. Recall that a set of instances belong to a security group. Opening port 80 on EC2 instances in […]

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Hints for managing Amazon Linux on EC2

I’m using Mac OS X and running instances in the EU West Region. My instances are of the Amazon Linux AMI. Installing the EC2 command line tools Having command-line tools installed is a supplement to the AWS management console found online. I found a good tutorial about how to get started with the tools for […]

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Image search by sketching – continued

It’s a simple question Can you search for images by sketching a similar image? I went looking online for a search engine that had implemented this feature, which I’ll call image-search-by-sketching. Update: Since I wrote this piece, GaZoPa no longer exists. In the meantime Google has implemented image-search-by-image. You can’t sketch, but you can use […]

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Image search by sketching in 2007

This is a post in my technology archaeology series. What is search by sketching? The idea is to search for images by drawing a sketch that roughly resembles what you are looking for. The sketch is your query. This idea was mentioned in years 2007, 2010 and sometime in the late 90’s (according to my […]

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BitTorrent for geodata was big in 2005

Big in 2005… Today I’m trying to find out whether BitTorrent + geodata is a “thing”. I have found out that it WAS a thing… in 2005! Just like Coldplay, Gorillaz, Eminem, 50 cents, James Blunt, Green Day… but it never really took off. In 2006 Chris Holmes had a blog post titled Distribution of […]