wget to download a website
michael Handy to scrap a website, with choice for levels of digging
OpenCV-Python Tutorials
http://docs.opencv.org/trunk/doc/py_tutorials/py_tutorials.html http://docs.opencv.org/trunk/doc/py_tutorials/py_setup/py_intro/py_intro.html http://opencvpython.blogspot.hk/ http://www.steinm.com/blog/motion-detection-webcam-python-opencv-differential-images/
Apple SceneKit
new high level 3d
Learn markdown
http://daringfireball.net/projects/markdown/syntax
How to specify nano or vim as editor for crontab file
export VISUAL=nano; crontab -e source and thx http://www.garron.me/en/bits/specify-editor-crontab-file.html
Mount SD card in Ubuntu
http://superuser.com/questions/455597/how-to-mount-removable-media-in-media-label-automatically-when-inserted-with