我通过以下方式在Ubuntu 16.04 LTE上运行更新：
sudo apt-get update && sudo apt-get upgrade && sudo apt-get autoremove && sudo apt-get autoclean && sudo apt-get dist-upgrade
我的问题是：
Lecture des listes de paquets... Fait
W: The repository 'http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://ppa.launchpad.net/tualatrix/next/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch http://ppa.launchpad.net/tualatrix/next/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Le téléchargement de quelques fichiers d'index a échoué, ils ont été ignorés, ou les anciens ont été utilisés à la place.
你能帮助我吗？
答案 0 :(得分：0)
尝试将xenial添加到repo
echo＆＃39; deb http://download.fpcomplete.com/ubuntu xenial main＆＃39; | sudo tee /etc/apt/sources.list.d/fpco.list