1.sudocp /etc/apt/sources.list /etc/apt/sources.list.old
2.sudo vim /etc/apt/source.list
3.更新源 apt-get update
deb http://mirrors.sohu.com/Ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiversedeb http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiversedeb http://mirrors.sohu.com/ubuntu/ trusty-PRoposed main restricted universe multiversedeb http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse新闻热点
疑难解答