ssh git@github.com The authenticity of host 'github.com (52.74.223.119)' can't be established. RSA key fingerprint is SHA256:*****************************. Are you sure you want to continue connecting (yes/no)? yes //打全yes Warning: Permanently added 'github.com,52.74.223.119' (RSA) to the list of known hosts. PTY allocation request failed on channel 0 Hi ******! You've successfully authenticated, but GitHub does not provide shell access. Connection to github.com closed.