初始化的用户名和密码

1. 用户名: ubuntu

2. 密码:ubuntu

连接到wifi

1. nmcli连接

关闭自动更新:

1. /etc/apt/apt.conf.d/10periodic, APT::Periodic::Update-Package-Lists "0";

开启ssh:

1. sudo apt-get install openssh-server

2. dpkg -l | grep ssh查看服务是否被安装

3. sudo sshd开启服务

换用阿里源: (20.04)

1.  sudo su
    cp /etc/apt/sources.list /etc/apt/sources.list.bak_`date "+%y_%m_%d"`
    sed -i 's/http:\/\/.*.ubuntu.com/https:\/\/mirrors.aliyun.com/g' /etc/apt/sources.list
    apt update
    apt upgrade

挂载交换分区:

1. dd if=/dev/zero of=/root/swapfile bs=1M count=1024创建1GB大小的文件

2. mkswap /root/swapfile创建交换文件系统

3. swapon /root/swapfile启用交换文件

4. /etc/fstab添加/root/swapfile swap swap defaults 0 0开机自启