装置 vim
sudo apt-get install vim
更换国内源
用下列内容替换 /etc/apt/sources.list 中原有内容：
# 默认正文了源码镜像以进步 apt update 速度，如有须要可自行勾销正文
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-security main restricted universe multiverse
# 预公布软件源，不倡议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ jammy-proposed main restricted universe multiverse顺次执行下列命令
sudo apt-get update
sudo apt-get upgrade装置 build-essential
sudo apt install build-essential
开启 openssh-server
装置 openssh-server
sudo apt install openssh-server -y
启用 openssh-server
sudo systemctl enable –now ssh
查看 openssh-server 运行状态
sudo systemctl status ssh
配置 UFW 防火墙（默认不开启）
启用 22 端口
sudo ufw allow 22/tcp
装置 emacs
sudo apt install emacs
装置 cmake
sudo apt install cmake
装置 git
sudo apt install git