raspberrypi upgrade wheezy to jessie

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list
sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list.d/raspi.list
sudo tee -a /etc/apt/sources.list.d/raspi.list <<< "deb http://archive.raspberrypi.org/debian/ jessie main ui"
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

raspberrypi upgrade wheezy to jessie is mentioned on: RaspberryPi

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