@账号
vboxuser
changeme

@ssh远程登录vbox虚拟机
https://www.cnblogs.com/BuzzWeek/p/17557981.html

Terminal

su - root
changeme
sudo apt-get update
sudo apt-get -y install openssh-server

#启动sshd
systemctl status sshd

@设置允许ssh登录vbox虚拟机
参考：https://blog.csdn.net/darkgray11/article/details/136443000

@vi命令
使用dd删除行

@配置安装源

vi /etc/apt/sources.list

deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib

预发布软件源，不建议启用

#deb http://mirrors.aliyun.com/debian/ groovy-proposed main restricted universe multiverse
#deb-src http://mirrors.aliyun.com/debian/ groovy-proposed main restricted universe multiverse

@命令

切换root

su - root

查看已安装应用列表

ps -e

安装包

apt install -y sshd