ssh_config(5) on macOS
The text faf47196fb01, as macOS 10.13.6, macOS 10.13.5, macOS 10.13.4, macOS 10.13.3, macOS 10.13.2 shipped it.
OpenSSH SSH client configuration files
The text faf47196fb01, as macOS 10.13.6, macOS 10.13.5, macOS 10.13.4, macOS 10.13.3, macOS 10.13.2 shipped it.
OpenSSH SSH client configuration files