The following is almost certainly not needed. If you install an Opera .deb package, our repository is automatically configured for updates.
If you nonetheless want to add the repository prior to installing Opera, please issue the following:
sudo add-apt-repository 'deb https://deb.opera.com/opera-stable/ stable non-free' wget -qO- https://deb.opera.com/archive.key | sudo apt-key add -Note: Do not change the entry in the first line from "stable" even if you use testing or unstable versions of your distro, otherwise you may receive the warning "
W: Conflicting distribution: deb.opera.com" on issuing apt-get update.
sudo apt-get update sudo apt-get install opera-stableNote: You may be asked about adding the Opera repository to receive updates. However, if you have followed the above instructions, you can answer no.
pub 4096R/A5C7FF72 2017-04-11 [expires: 2019-09-28]
Key fingerprint = D4CC 8597 4C31 396B 18B3 6837 D615 560B A5C7 FF72
uid Opera Software Archive Automatic Signing Key 2017
sub 4096R/2E8D6BE2 2017-04-11 [expires: 2019-09-28]