摘要：
sudo add-apt-repository --remove ppa:whatever/ppasudo add-apt-repository ppa:chris-lea/node.jsremove thesudo add-apt-repository --remove ppa:whatever/pparm files at /etc/apt/sources.list.d/ 阅读全文
摘要：
remove thesudo add-apt-repository --remove ppa:whatever/ppa /etc/apt/sources.list.d/ 阅读全文