ssh 密钥

ssh public key and private key

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent

remote-ssh: open ssh configuration file
/Users/xuwenting/.ssh/config

Host wenwen
HostName ip.ip.ip.ip
User wenting

I can remote my ubuntu computer with ssh wenwen