Emphasize keys over passwords

Author: bkmgit

_episodes/01-connecting.md

@@ -227,27 +227,31 @@ example computer, we will use SSH (if you are using PuTTY, see above).
 
 SSH allows us to connect to UNIX computers remotely, and use them as if they
 were our own. The general syntax of the connection command follows the format
-`ssh [email protected]` and 
 `ssh -i ~/.ssh/key_for_remote_computer [email protected]` 
-when using SSH keys.  Let's attempt to connect to the HPC system now:
+when using SSH keys and `ssh [email protected]` if only
+password access is available.  Let's attempt to connect to the HPC system
+now:
 
 ```
-ssh yourUsername@{{ site.workshop_host_login }}
+ssh -i ~/.ssh/key_{{ site.workshop_host }}_ed25519 yourUsername@{{ site.workshop_host_login }}
 ```
 {: .language-bash}
 
+or
+
 ```
-ssh -i ~/.ssh/key_{{ site.workshop_host }}_ed25519 yourUsername@{{ site.workshop_host_login }}
+ssh -i ~/.ssh/key_{{ site.workshop_host }}_rsa yourUsername@{{ site.workshop_host_login }}
 ```
 {: .language-bash}
 
-or
+or if SSH keys have not been enabled 
 
 ```
-ssh -i ~/.ssh/key_{{ site.workshop_host }}_rsa yourUsername@{{ site.workshop_host_login }}
+ssh yourUsername@{{ site.workshop_host_login }}
 ```
 {: .language-bash}
 
+
 ```
 {% include /snippets/01/login_output.{{ site.workshop_host_id }} %}
 ```