tags: human

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Common tags - number of posts

energy (4), open source (1), readable (1), transportation (1), SQL (1), power (1), pedal (1), command line (1), unix (1), electricity (1),

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energy, human

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Are we heading for a human-powered future? - CNN.com

tags: human, energy, power

Would you still watch your favorite television program if you had to cycle for an hour before you could view it?

Couch potatoes will be horrified, but fresh advances in human-powered technology -- where users power appliances through their own motion -- could one day see a 'workout-to-watch' scenario become reality.

Human power is rapidly gaining in popularity worldwide as businesses seek 'greener' methods of operating.

url: http://www.cnn.com/2008/TECH/science/08/01/Human.power/index.html

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Lee Devlin's Weblog: Electricity from Human Power

Every once in a while I read stories about people generating electricity with treadmills and bicycles by connecting them to electric generators. I read an article recently about a health club in Hong Kong that was using the energy from the human-powered exercise equipment to offset its electric bill. Whenever I read something like this, the first thing I want to do is put it in its proper context.

url: http://www.k0lee.com/blog/2008/01/electricity-from-human-power.html

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Human Power - Electricity and transportation technologies

Human kinetic energy can be transfered in a number of ways. Human energy is most commonly used to propel bicycles, but can also be used to generate electricity and power hand-crank tools. Some third world organizations are implementing human powered technologies to generate electricity to power computers and other appliances. The articles on this page are about human kinetic energy and its many uses.

url: http://www.alternative-energy-news.info/technology/human-powered/

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David Butcher: Pedal Powered Generator - DIY Plans

tags: energy, human, pedal
Curious about Human Power? Need some exercise? Looking to lose weight? Need inspiration? Researching technical information? Expensive gasoline making you nuts? You have come to the right place.

url: http://www.los-gatos.ca.us/davidbu/pedgen.html

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Human Readable UNIX Commands

Isn't it odd that some UNIX commands like ls and df have options like -h to make the output more human readable? You would think it would be the default! I love open source, but sometimes UNIX just stinks.

So i guess if you omit the -h options, that output is machine readable, facilitating the flow of information from one process to the next. NOPE. In my opinion unix does this very poorly and it's never consistent.

example: When you run ls -l, is it safe to assume that the date starts at character 36 (0 based). It almost alwasy does, but if the file size is over 999,999,999 bytes, then the date starts at character 37.

So you say delimit fields based on space. If your file name has a space in it, then field[7] will only have the first word of it.

If you've ever noticed, the output of many unix commands is tabular. That is there are fields and records. Doesn't it make sense that comma separated fields is the best machine readable output? All unix commands with tabular output should have this option.

In fact i can go so far as to suggest using SQL as an interface to a computer system.

select name, size
from directory
where '2005-10-10' < date
order by size desc
limit 10