ssh-keygen命令 秘钥认证

ssh-keygen
cat ~/.ssh/id_rsa.pub | ssh user@IP "cat - >> ~/.ssh/authorized_keys"

ssh-copy-id -i ~/.ssh/id_rsa.pub user@IP

ssh-copy-id -i ~/.ssh/id_rsa.pub  test@192.168.3.2
ssh-copy-id -i ~/.ssh/id_rsa.pub "-p 20022 test@192.168.3.2"