scp without known_hosts check
scp is supposed to take the same command line options as ssh, try: -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null Maybe add -q to disable the warnings as well.
known-hosts
Can I automatically add a new host to known_hosts?
Set the StrictHostKeyChecking option to no, either in the config file or via -o : ssh -o StrictHostKeyChecking=no [email protected]