打开终端(呵呵,这个不用怎么说了吧,地球人都知道)
1.)输入:sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup
//此为保存当前的源列表
2.)输入:sudo gedit /etc/apt/sources.list //此为编辑源列表
此时会用gedit打开源列表,全选后,复制以下横线之间的内容覆盖原有的全部内容:
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deb http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe
multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted
universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted
universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted
universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted
universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ feisty main restricted
universe multiverse
deb-src http: