How to install cad.py in Ubuntu


 * Download cad, cad.p and cad.cfg from http://fab.cba.mit.edu/about/fab/.
 * Open terminal.
 * sudo mv cad /usr/local/bin/
 * sudo mv cad.py /usr/local/bin/
 * sudo mv cad.cfg /usr/local/bin/
 * sudo chmod 755 /usr/local/bin/cad


 * In Synaptic Package Manager install python-numpy, python-scipy, python-tk