Copy large number of items in the background with rsync

rsync -ahuv --log-file=/tmp/rsync07082016.log foldertocopy destination

options:

a archive

h display human readable

u update only – do not copy items already in the folder

v verbose

After running rsync command, click Ctrl+z

Then type bg to triger it on the background

You can monitor the output with tail -f /tmp/rsync07082016.log