Another important function of SSH is allowing secure file transfer using SCP and SFTP.
Just as all modern Unix-like systems have an SSH client, they also have SCP and SFTP clients. To copy a file from your computer to another computer with ssh, go to a command-line and type:
scp <file> <username>@<IP address or hostname>:<Destination>
scp -r /var/www/html/ email@example.com:/home/ubuntu/
The -r (recursive) option means to copy the whole folder and any sub-folders.