允许root登录
sudo passwd root
启动网卡DHCP并配置DNS
vi /etc/network/interfaces
auto ens3 #auto lo iface ens3 inet dhcp dns-nameservers 114.114.114.114
注：如果是静态IP地址就做如下设置
auto ens3 iface ens3 inet static address 192.168.1.100 netmask 255.255.255.0 gateway 192.168.1.1 dns-nameserver 114.114.114.114
允许root登录
su
vi /etc/ssh/sshd_config
PermitRootLogin yes
wq!
service sshd restart
更新阿里源
cp /etc/apt/sources.list /etc/apt/sources.list.bak echo " " >/etc/apt/sources.list vi /etc/apt/sources.list
# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties deb http://mirrors.aliyun.com/ubuntu/ xenial universe deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties deb http://archive.canonical.com/ubuntu xenial partner deb-src http://archive.canonical.com/ubuntu xenial partner deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse
wq!
apt-get update
如果不能update则执行
apt-get install -f apt
安装轻量级桌面xfce[优先选择]
apt-get install xubuntu-desktop
如果你只想安装必要的桌面管理软件而不想安装一些诸如 Evolution 和 OpenOffice 的不需要的应用软件，可使用下面的命令：
apt-get install --no-install-recommends ubuntu-desktop
安装 KDE 桌面，使用下面的命令：
sudo apt-get install kubuntu-desktop
我绝大多数情况下不用GUI界面，所以桌面我不擅长。
常用命令软件的安装
apt install -y sysstat