更新資源

sudo apt-get update

對軟件進行升級

sudo  apt-get  upgrade

升級系統版本

sudo  apt-get  dist-upgrade

安裝openssh-server

sudo apt-get install openssh-server

查看ssh服務是否開啟

ps -e |grep ssh

啟動服務

sudo /etc/init.d/ssh restart

報錯處理

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

進入/etc/ssh/sshd_config查找PermitRootLogin選項（可以利用:/PermitRootLogin的方法進行查找）
 將這個選項后面的值（一般為prohibit-password）修改為yes

其他

apt install openssh-server		#安裝openssh-server
service ssh start			#啟動openssh-server
ps -e |grep sshd			#查看ssh服務是否啟動  -e查看全部進程
service ssh status                      #查看ssh運行狀態
service ssh restart                     #重啟