opera-ub

wget -O - http://deb.opera.com/archive.key | sudo apt-key add -

sudo sh -c 'echo "deb http://deb.opera.com/opera/ stable non-free" > /etc/apt/sources.list.d/opera.list'

sudo apt-get update

sudo  apt-get  install opera-stable pepperflashplugin-nonfree