What is “ssh-copy-id” Package?

Add a public key to a remote machine’s authorized_keys file
For more details: https://www.openssh.com/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install ssh-copy-id.

  brew install ssh-copy-id

Now, use ssh-copy-id!