Review

doc.zih.tu-dresden.de/docs/access/ssh_login.md

@@ -27,7 +27,7 @@ Enter same passphrase again:
 ```
 
 Type in a passphrase for the protection of your key. The passphrase should be **non-empty**.
-Copy the public key to the ZIH system (Replace placeholder `marie` with your ZIH login):
+Copy the **public key** to the ZIH system (Replace placeholder `marie` with your ZIH login):
 
 ```console
 marie@local$ ssh-copy-id -i ~/.ssh/id_ed25519.pub marie@login2.barnard.hpc.tu-dresden.de
@@ -39,13 +39,20 @@ Are you sure you want to continue connecting (yes/no)?
 Compare the shown fingerprint with the [documented fingerprints](key_fingerprints.md). Make sure
 they match. Then you can accept by typing `yes`.
 
-!!! info
+!!! note "One `ssh-copy-id` command for all clusters"
+
+    Since your home directory, where the file `.ssh/authorized_keys` is stored, is available on all HPC
+    systems, this task is only required once and you can freely choose a target system for the
+    `ssh-copy-id` command. Afterwards, you can access all clusters with this key file.
+
+??? info "ssh-copy-id is not available"
+
     If `ssh-copy-id` is not available, you need to do additional steps:
 
     ```console
     marie@local$ scp ~/.ssh/id_ed25519.pub marie@login2.barnard.hpc.tu-dresden.de:
     The authenticity of host 'barnard.hpc.tu-dresden.de (141.30.73.104)' can't be established.
-    RSA key fingerprint is SHA256:HjpVeymTpk0rqoc8Yvyc8d9KXQ/p2K0R8TJ27aFnIL8.
+    RSA key fingerprint is SHA256:Gn4n5IX9eEvkpOGrtZzs9T9yAfJUB200bgRchchiKAQ.
     Are you sure you want to continue connecting (yes/no)?
     ```
 
@@ -116,6 +123,11 @@ marie@local$ ssh barnard
 If you want to copy data from/to ZIH systems, please refer to [Dataport Nodes: Transfer Data to/from
 ZIH's Filesystems](../data_transfer/dataport_nodes.md) for more information on dataport nodes.
 
+!!! note "HPC systems `Alpha`, `Julia`, `Romeo`"
+
+In the above `.ssh/config` file, the HPC system `Barnard` is chosen as an example.
+    The very same settings can be made for the HPC systems `Alpha`, `Julia`, `Romeo`, etc.
+
 ## X11-Forwarding
 
 If you plan to use an application with graphical user interface (GUI), you need to enable