Linux or MacOS
To establish an sftp (secure file transfer
protocol) connection to another computer, run the command in a
terminal
sftp username@hostname
where username is the name of your account on the host machine (if
it's missing, then you will be connected with the same username as on
your local machine), and hostname is the complete name of the remote
host, like axle.iusb.edu.
If you are asked if you are sure that you want to open this
connection, answer yes.
SFTP commands
Windows
You can install a program called WinSCP and have a GUI version of the program. Once you establish the connection with the same information as above (username, host name, type of connection: FTP or SFTP), then you get two explorer-like windows where you can drag files from one side to the other to transfer them.