How do I copy a file to a folder in cmd?

Question:    Could you supply the command for connecting to a folder on another Windows server? I need to create a connection to another folder share and then copy a file. The administrator has supplied me with  user name & password 

Answer: I'm assuming you have the folder share available .

From your requesting server. Note: I've select M:\  - customise according to the server reqs

--command to make connection

net use M: \\myserver.com\myfoldershare /USER:domain\myuser "my_password"
The command completed successfully.

change directory to M:\

--copy file 

M:\ copy c:\temp\myfile.txt 

--check to see if file is there

dir 

Some alternative methods using Powershell

How to force a powershell copy-item file copy

Powershell find command and copy a file

Compare-Object Powershell to validate a folder copy