1.安装ssh服务
sudo apt-get install openssh-server
2.启动ssh服务
sudo /etc/init.d/ssh start
3.设置开机自启动
sudo systemctl enable ssh
4.关闭ssh开机自动启动命令
sudo systemctl disable ssh
5.单次开启ssh
sudo systemctl start ssh
6.单次关闭ssh
sudo systemctl stop ssh
7.设置好后重启
reboot
