How to automatically accept a license in Opera?

Question

linux

I know that there is a command to automatically accept a license in VirtualBox

echo virtualbox-ext-pack virtualbox-ext-pack/license select true | debconf-set-selections

is there something similar in Opera? so that you can enter the answer YES automatically.
so that there are no such messages

Answer 1

You have misunderstood what the opera wants from you. This dialog has nothing to do with the license - it's a suggestion to add the opera repositories to your package manager. The logical question is why the team

echo "deb https://deb.opera.com/opera-stable/ stable non-free" | tee -a /etc/apt/sources.list.d/opera-stable.list

does not add a repository? If you download the opera-stable package and unzip it, you will see the config file in the DEBIAN folder. It has a line

if grep -q '^\s*deb\s*http://deb.opera.com/' /etc/apt/sources.list && ! test -f /etc/apt/sources.list.d/opera.list

Which checks if you accidentally added an opera repository. If not added, then the same dialog pops up. The problem is that you are running a command that adds the opera-stable.list file while the check is looking for either the opera.list file or an entry in the system-wide sources.list.
Where did you get your command from? According to the link you left, the commands are different

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 -
sudo apt-get update
sudo apt-get install opera-stable

They add an entry to sources.list and it seems like the check should fail without a dialog being displayed. But the most interesting is yet to come. These crooked monkeys check the repository like this regular expression '^\s*deb\s*http://deb.opera.com/'
A in the instructions says to add http s ://deb.opera.com/' . And the check naturally breaks off.
What can be done? Write a script that will download the package before installation, unpack it, remove the config file from there, pack it back and install it through dpkg.