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wget -q https://packages.mozilla.org/apt/repo-signing-key.gpg -O- | sudo tee /etc/apt/keyrings/packages.mozilla.org.asc > /dev/nullgpg -n -q --import --import-options import-show /etc/apt/keyrings/packages.mozilla.org.asc | awk '/pub/{getline; gsub(/^ +| +$/,""); if($0 == "35BAA0B33E9EB396F59CA838C0BA5CE6DC6315A3") print "\nThe key fingerprint matches ("$0").\n"; else print "\nVerification failed: the fingerprint ("$0") does not match the expected one.\n"}'sudo tee /etc/apt/sources.list.d/mozilla.sources > /dev/null << EOFTypes: debURIs: https://packages.mozilla.org/aptSuites: mozillaComponents: mainSigned-By: /etc/apt/keyrings/packages.mozilla.org.ascEOFsudo tee /etc/apt/preferences.d/mozilla > /dev/null << EOFPackage: *Pin: origin packages.mozilla.orgPin-Priority: 1000EOFsudo tee /etc/apt/preferences.d/mozilla > /dev/null << EOFPackage: firefoxPin: release o=UbuntuPin-Priority: -1EOFsudo snap remove firefoxsudo apt-get updatesudo apt-get install firefox