### 修改源命令：

sudo vi /etc/apt/source.list

### 把source.list内容替换成下面其中一个源

##阿里云
deb http://mirrors.aliyun.com/ubuntu/ zesty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ zesty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ zesty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ zesty-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ zesty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ zesty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ zesty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ zesty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ zesty partner
deb http://extras.ubuntu.com/ubuntu/ zesty main

##Ubuntu官方中国
deb http://cn.archive.ubuntu.com/ubuntu/ zesty main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ zesty-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ zesty-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ zesty main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ zesty-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ zesty-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ zesty partner
deb http://extras.ubuntu.com/ubuntu/ zesty main

##网易源
deb http://mirrors.163.com/ubuntu/ zesty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ zesty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ zesty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ zesty-backports main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ zesty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ zesty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ zesty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ zesty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ zesty-proposed main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ zesty partner
deb http://extras.ubuntu.com/ubuntu/ zesty main