1. 获取root权限
1. 设置root密码:打开终端,输入:sudo passwd root,按照提示分别输入当前账号密码和root账号密码
2. 登陆root账号:在终端输入:su,回车后按照提示输入设置好的密码,即切换到root账号
2. 更新软件源
1. 获取网易unbuntu源:http://mirrors.163.com/
2. 根据版本选择:以下为14.04版本
deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
3. 备份源列表文件
sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
4. 用网易源覆盖官方源,使用gedit编辑后保存
sudo gedit /etc/apt/sources.list
5. 更新源
sudo apt-get update
sudo apt-get upgrade(更新软件,非必须)