How to install Opera browser on Ubuntu 10.04
Opera isn't included in the default repositories of the Ubuntu 10.04 installation.
Follow these steps and get Opera installed on your Ubuntu computer.
Add the following line to your /etc/apt/sources.list file:
deb deb.opera.com/opera/ stable non-free
Get the Opera GPG key
wget -O - deb.opera.com/archive.key | sudo apt-key add -
sudo apt-get install debian-archive-keyring
Update your package list:
sudo apt-get update
Finally, install the Opera web browser:
sudo apt-get install opera
You're all set. Opera can be found in the applications menu under Applications > Internet > Opera