更新资源

sudo apt-get update

对软件进行升级

sudo  apt-get  upgrade

升级系统版本

sudo  apt-get  dist-upgrade

安装openssh-server

sudo apt-get install openssh-server

查看ssh服务是否开启

ps -e |grep ssh

启动服务

sudo /etc/init.d/ssh restart

报错处理

root@DESKTOP-R5E7NDM:~# sudo /etc/init.d/ssh restart
Could not load host key: /etc/ssh/ssh_host_rsa_key
Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Could not load host key: /etc/ssh/ssh_host_ed25519_key
 * Restarting OpenBSD Secure Shell server sshd                                                                          Could not load host key: /etc/ssh/ssh_host_rsa_key
Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Could not load host key: /etc/ssh/ssh_host_ed25519_key

 cd /etc/ssh/
 ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_keyssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_keyssh-keygen -t rsa -f /etc/ssh/ssh_host_ecdsa_keyssh-keygen -t rsa -f /etc/ssh/ssh_host_ed25519_key

修改配置

vim /etc/ssh/sshd_config

进入/etc/ssh/sshd_config查找PermitRootLogin选项（可以利用:/PermitRootLogin的方法进行查找）
 将这个选项后面的值（一般为prohibit-password）修改为yes

其他

apt install openssh-server		#安装openssh-server
service ssh start			#启动openssh-server
ps -e |grep sshd			#查看ssh服务是否启动  -e查看全部进程
service ssh status                      #查看ssh运行状态
service ssh restart                     #重启