Solved issue-194. Added missing information regarding usage of SSH config for...

Solved issue-194. Added missing information regarding usage of SSH config for data transfer using export nodes in 'access/ssh_login' and 'data_transfer/export_nodes'

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

@@ -88,6 +88,7 @@ in it (you can omit lines starting with `#`):
 
 ```bash
 Host taurus
+  #Use either login node for shell access or export nodes for data transfer
   HostName taurus.hrsk.tu-dresden.de
   #Put your ZIH-Login after keyword "User":
   User marie
@@ -105,6 +106,8 @@ Afterwards, you can connect to the ZIH system using:
 ```console
 marie@local$ ssh taurus
 ```
+!!!info
+    Please note that in above example login node `taurus.hrsk.tu-dresden.de` is used in configuration file to access shell in ZIH systems. SSH configuration file can also be used to perform data transfer from/to ZIH systems. An additional profile with same settings can be created. Simply replace login node in front of `HostName` with export node (eg. `taurusexport.hrsk.tu-dresden.de`) in the SSH configuration profile. Please refer to [Export Nodes: Transfer Data to/from ZIH's Filesystems](../data_transfer/export_nodes.md) for more information on export nodes.
 
 ### X11-Forwarding
 

doc.zih.tu-dresden.de/docs/data_transfer/export_nodes.md

@@ -108,6 +108,24 @@ the local machine.
     # Copy directory
     marie@local$ rsync -r <zih-user>@taurusexport.hrsk.tu-dresden.de:<directory> <target-location>
     ```
+!!!info
+    User can also use SSH configuration file to transfer the data from/to the ZIH systems. Please refer to 'Connecting from Linux' section on [Connecting with SSH](../access/ssh_login.md) page for more information on how to create and use the SSH configuration file. In the newly created profile, simply replace values in front of `HostName` with name of the export node as shown below.
+
+    ```bash
+    Host <configuration_profile_name>
+      # Use name of the export node after HostName
+      HostName taurusexport.hrsk.tu-dresden.de
+    [...]
+    ```
+    Once the configuration is created, user can initiate transfer simply using any of the tools mentioned above. 
+    
+    ```console
+    # Transfer from ZIH system to local machine
+    marie@local$ rsync -r <configuration_profile_name>:<directory_or_file> <target-location>
+
+    # Transfer from local machine to ZIH system
+    marie@local$ rsync -r <configuration_profile_name>:<directory_or_file> <target-location>
+    ```
 
 ## Access From Windows