1、为root用户设置密码
sudo passwd root
2、设置用户登陆界面
sudo gedit /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf
1 user-session=ubuntu
2 greeter-show-manual-login=true
3 all-guest=false
3、修改登陆root用户错误信息
sudo gedit /root/.profile
1 修改为 mesg n || true 为 tty -s && mesg n || true
4、修改系统源文件
1 cd /etc/apt
2 cp source.list source.list.bak
3 gedit source.list
东北大学
1 deb-src http://mirror.neu.edu.cn/ubuntu/ xenial main restricted #Added by software-properties
2 deb http://mirror.neu.edu.cn/ubuntu/ xenial main restricted
3 deb-src http://mirror.neu.edu.cn/ubuntu/ xenial restricted multiverse universe #Added by software-properties
4 deb http://mirror.neu.edu.cn/ubuntu/ xenial-updates main restricted
5 deb-src http://mirror.neu.edu.cn/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
6 deb http://mirror.neu.edu.cn/ubuntu/ xenial universe
7 deb http://mirror.neu.edu.cn/ubuntu/ xenial-updates universe
8 deb http://mirror.neu.edu.cn/ubuntu/ xenial multiverse
9 deb http://mirror.neu.edu.cn/ubuntu/ xenial-updates multiverse
10 deb http://mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
11 deb-src http://mirror.neu.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
12 deb http://archive.canonical.com/ubuntu xenial partner
13 deb-src http://archive.canonical.com/ubuntu xenial partner
14 deb http://mirror.neu.edu.cn/ubuntu/ xenial-security main restricted
15 deb-src http://mirror.neu.edu.cn/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
16 deb http://mirror.neu.edu.cn/ubuntu/ xenial-security universe
17 deb http://mirror.neu.edu.cn/ubuntu/ xenial-security multiverse
18清华大学
1 # deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
2 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted
3 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted
4 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial universe
5 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates universe
6 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial multiverse
7 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates multiverse
8 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse
9 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted
10 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security universe
11 deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security multiverse阿里云
1 # deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
2 deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties
3 deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
4 deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties
5 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
6 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
7 deb http://mirrors.aliyun.com/ubuntu/ xenial universe
8 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
9 deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
10 deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
11 deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
12 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
13 deb http://archive.canonical.com/ubuntu xenial partner
14 deb-src http://archive.canonical.com/ubuntu xenial partner
15 deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
16 deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
17 deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
18 deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
5、更新源和软件
1 sudo apt-get update
2 sudo apt-get upgrade
6、修改主机名
sudo gedit /etc/hostname