@mariolinguagrossa ciao, se usi Ubuntu o Debian based in genere fai cosi`
(su altre distro pare che questo metodo non funzioni):
-Go to /usr/share/applications
Find a shortcut to Opera. In mc (as well as doublecmd) it will be called "Opera.desktop".
Open this shortcut in a text editor with administrator privileges.
In the "Exec" line, replace "opera %U" with "opera --lang=Your_Language %U", where "Your_Language" is your language, e.g. "pl" for Polish.
Complete the "Exec" lines in the other sections as appropriate.
You will have to repeat it after every update 😞
The solution also works on LinuxMint and LinuxMint Debian Edition. Possibly other distributions as well.
Fonte: https://forums.opera.com/topic/60750/no-translation-to-polish-in-ubuntu
