You can use rsync with an ssh key for password-less transfers. This is useful for doing unattended backups using a cron job and a script or to keep your website in line with a local copy.
First you will need to generate the Private and Public Keys on the device you want to run the script on.
yo...
rsync -vP --inplace [SOURCE] [DESTINATION]
rsync -vP --inplace "/home/userfolder/file.xxx" "username@hostIP:/home/foldername/file.xxx"
RSYNC FLAGS
-a archive mode is -rlptgoD (no -A,-X,-U,-N,-H)
-r recurse into directories
-l copy symlinks as symlinks
-p p...