show all ssh keys

howto/new-machine-cymru.md

@@ -55,7 +55,9 @@ with:
 This can be copy-pasted into your `~/.ssh/known_hosts` file, or, to be
 compatible with the installer script below, you should instead use:
 
-    ssh-keygen -E md5 -l -f /etc/ssh/ssh_host_ed25519_key
+    for key in /etc/ssh/ssh_host_*_key; do
+        ssh-keygen -E md5 -l -f $key
+    done
 
 TODO: make the fabric installer accept non-md5 keys.