In my last post I showed you how you can run a software defined radio easily on a Mac OS X Yosemite. In just a few more steps you can also track commercial airplanes in your area with the same device you can buy here (affiliate link) with free shipping.
Install the software
cd dump1090-master make ./dump1090 --interactive --net
A ridiculous amount of coffee was consumed in the process of building this project. Add some fuel if you'd like to keep me going!