Hello Linux Geeks.
In this article I will show you how to install Opera on Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 14 Nadia, Linux Mint 13 Maya, Debian 7 Wheezy and Debian 6 Squeeze.
Actually, this installation tutorial works on all the Debian based distributions, so you can try it on Knoppix, Damn Small Linux and any other Debian based Linux you prefer.
Add the Opera repo:
$ sudo sh -c 'echo "deb http://deb.opera.com/opera/ stable non-free" >> /etc/apt/sources.list.d/opera.list'
Install the key:
$ sudo sh -c 'wget -O - http://deb.opera.com/archive.key | apt-key add -'
Update the system:
$ sudo apt-get update
Install Opera:
$ sudo apt-get install opera
This is it. Happy browsing.