<s>[INST] 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. [/INST] 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!</s>\ <s>[INST] Thank you. Can you explain in more detail with better organization? [/INST] Sorry, yes I can explain how to copy a directory of files from one remote Debian server to another remote Debian server in more detail and with better organization.
To copy files from one remote server to another you can use the SCP program with the following command:
```
$ scp -r <user>@<server_a ip>:~/Documents/training_results <user>@<server_b ip>:~/training_results
```

Now I will explain this command in more detail.
The ```scp``` command allows you to use ssh protocol to copy files from a source location to a target location like so

```
$ scp <source> <target>
``` 

Usually this is from a local to a remote machine or a remote machine onto your local machine, but according to the manual ```scp(1)``` 

> ... Copies between two remote hosts are also permitted.

This means we can directly copy from server A to server B, which is what the above command is doing.

To each location is made up of a couple parts: the user, the server address and the file location on the server with the following form:
```
<user>@<server_ip>:<file_location>
```
In the original command you will need to fill in your ssh user in the ```<user>``` field (which may differ for each server) and the server IPs in the ```<server_a ip>``` and ```<server_b ip>``` fields.

Additionally, the ```-r``` option specifies the entire directory, sub directories and symbolic links will be copied to the target.

If the command does not work you may want to also specify the ```-3``` option so that files pass through the local host instead of being copied from server A to server B directly. 
For example:
```
$ scp -3 -r <user>@<server_a ip>:~/Documents/training_results <user>@<server_b ip>:~/training_results
```

Please let me know if you need more help!</s>