How to Configure a Password-less SSH 

1) Create the key pair using the command ssh-keygen

2) The default key pair is  ~/.ssh/id_rsa (private key) and ~/.ssh/id_rsa.pub (public key) 

3) Copy the public key in clipboard using the command pbcopy < ~/.ssh/id_rsa.pub

4) On the remote server append your copied public key 

pbpaste > ~/.ssh/authorized_keys

5) SSH into remote server without password ssh -i ~/.ssh/id_rsa <remote_server_name>

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#on local machine ssh-keygen pbcopy < ~/.ssh/id_rsa.pub    #on remote server pbpaste > ~/.ssh/authorized_keys #on local machine ssh -i ~/.ssh/id_rsa <remote_server_name>

Refer to documentation to learn more about SSH.