如标题所示。我尝试添加一个存储库，如何删除它。它不让我通过软件源程序。我试过sudo ppa-purge ppa:quantal（它的名字）但失败了，有人有什么想法吗？
deb http://archive.ubuntu.com/ubuntu/ quantal main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ quantal main restricted universe multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu/ quantal-security main restricted universe multiverse #Added by software-properties
deb http://archive.ubuntu.com/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ quantal-updates main restricted universe multiverse #Added by software-properties
deb http://launchpad.net/ubuntu/quantal/amd64/ quantal
deb-src http://launchpad.net/ubuntu/quantal/amd64/ quantal
答案1
敞开心扉终端（ctrl+alt+T）并发布命令：[替换编辑和你最喜欢的文本编辑器]
gksu gedit /etc/apt/sources.list
和消除所有引用有故障的存储库。