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Archive for the 'Tech Rambling' Category

Drive clone in Linux with dd

Monday, February 3rd, 2014

Simple way to clone drives in Linux. Assume drive sda is the source, and sdb is the destination. dd if=/dev/sda of=/dev/sdb & PID=$!; which kill -USR1 $PID; & runs dd in the background. PID=$! gets the last process id (of the dd command) Which runs the command every second or two. Kill -USR1 tells dd […]

Crystalfontz LCD – 635 on FreeBSD and OpenSolaris

Wednesday, December 16th, 2009

I have recently gotten a hold of a CFA 635 LCD + Keypad device. Very slick. I was doing some work with it and wanted to use a unix OS to drive the device for some custom work. I ran into a couple minor things when getting the device setup. 1) It works great in […]

When free isn’t free – enforcement of the GPL just because

Tuesday, December 15th, 2009

All I can say is wow. I read this article today and I am unfortunately not surprised. This is a perfect example of why many developers shy away from the GPL license when distributing their open source code. First, I want to say I am a big fan of Open Source. I have used […]

Seperation Code And State

Friday, December 19th, 2008

This is pretty clever. Definitely fits in the category of nerd humor. Worth a look

What’s happening inside your computer?

Wednesday, December 3rd, 2008

Very good article on whats going on inside your computer. A very good description of the relative speeds of internal components. I especially liked the part about how accessing the hard drive is like “leaving the building to roam the earth for one year and three months”. For coders, this illustrates well why cache concurrency […]

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