I have two remote Debian servers, A and B. How can I copy a directory of files at `~/Documents/training_results` existing on server A to the path `~/training_results` on server B? I have SSH access on my local laptop to each of the servers, but neither of the servers have SSH access to the other.
To copy files from one computer to another using SSH, you can use the SCP (Secure Copy Paste) program. SCP comes default in OpenSSH on many distributions. Use the following command.

```
$ scp -r <user>@<server_a ip>:~/Documents/training_results <user>@<server_b ip>:~/training_results
```

Now I will explain what this command does. 

The ```-r``` option is to copy directory(s) recursively. 
Then you enter the User you want and the IP address for server A, then a colon. The directory we will copy is ```training_results``` from the ```Documents``` folder at the user ```home``` directory. 
Next, you enter the User you want and the IP address for server B, and then we do the same thing and enter the path where we will be pasting the file(s)/directory(s). 

I hope this helps!
Thank you. Can you explain in more detail with better organization?
Here's a more detailed explanation with better organization:

To copy a directory from one Debian server to another, you can use SCP (Secure Copy), which is a program in OpenSSH. Here's the basic command structure:
scp -r <user>@<source_server_ip>:<source_directory> <user>@<destination_server_ip>:<destination_directory>

Now, let's apply this structure to your specific use case:

scp -r <user>@<server_a_ip>:~/Documents/training_results <user>@<server_b_ip>:~/training_results

Explanation:

-r: The -r option is used to copy directories recursively, meaning it will copy all the files and subdirectories in the source directory.
<user>: Replace this with the username you use to SSH into each server.
<server_a_ip>: Replace this with the IP address of server A.
~/Documents/training_results: This is the source directory on server A that you want to copy. It's located at ~/Documents/training_results (the user's home directory on server A).
<server_b_ip>: Replace this with the IP address of server B.
~/training_results: This is the destination directory on server B where you want to copy the files. It's located at ~/training_results (the user's home directory on server B).
That's it! Run this command on your local laptop and it will copy the directory from server A to server B over SSH.