Useful built-in macOS command-line utilities

Not a command, but a little known feature of the Terminal app:

(shift+command+K) or Menu 'Shell' -> 'New Remote Connection...'

opens a SSH, S(FTP), TELNET connection manager window!

Sort of like command+k in the Finder, connects to a server. You can type in vnc://host or vnc://localhost:port... the latter is for VNC to hosts via an SSH tunnel.

It's quite a good VNC client, too.

And sometimes handy: shift+cmd+. to toggle showing hidden (dot) files in Finder.

It's too bad this doesn't use .ssh/config