Rsync

# Pull Mode
rsync -arv -e "ssh -p 2222 -i .ssh/pvkey" [email protected]:/remote/file /local/file
# Push Mode
rsync -arv -e "ssh -p 2222 -i .ssh/pvkey" /local/file [email protected]:/remote/file 
# Restart atfer being interrupted
rsync --append-verify ...