~/.ssh/known hosts

ssh-keygen -R SERVER_NAME -R Removes all keys belonging to hostname from a known_hosts file

ssh-keyscan github.com >> ~/.ssh/known_hosts

See also

• SSH: ssh, TLS, .ppk, .pem, .crt, .pub, ED25519, Key exchange method (KEX), public key, private key, ssh -Q kex, IAMUserSSHKeys, known_hosts, ssh tunnel, Dropbear
• OpenSSH: ssh, ssh -O, -i, -t, -T, -N, -V, /etc/ssh/ssh_config, ssh --help