ssh-copy-id ubuntu code example
Example 1: copy ssh key from windows to linux
scp ~/.ssh/id_rsa.pub [linux_user]@[linux_IP/linux_hostname]:~/.ssh/authorized_keysExample 2: ssh-copy-id windows
type $env:USERPROFILE\.ssh\id_rsa.pub | ssh {IP-ADDRESS-OR-FQDN} "cat >> .ssh/authorized_keys"