Mozilla
Chave GPG
wget -nv -O- https://packages.mozilla.org/apt/repo-signing-key.gpg | gpg --dearmor > /etc/apt/keyrings/mozilla.gpg
Repositório
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/mozilla.gpg] https://packages.mozilla.org/apt mozilla main" > /etc/apt/sources.list.d/mozilla.list
Programas
Firefox
apt install firefox firefox-l10n-pt-br
update-alternatives --install /usr/bin/x-www-browser x-www-browser /usr/bin/firefox 99
Firefox Developer Edition:
apt install firefox-devedition firefox-devedition-l10n-pt-br
update-alternatives --install /usr/bin/x-www-browser x-www-browser /usr/bin/firefox-devedition 99
Não preferir pacote do repositório do Ubuntu:
cat >/etc/apt/preferences.d/firefox <<EOF
Package: firefox
Pin: origin br.archive.ubuntu.com
Pin-Priority: 50
EOF
Configuração
browser.tabs.closeWindowWithLastTab
:false
browser.tabs.insertRelatedAfterCurrent
:false
browser.urlbar.trimURLs
:false