It is pretty interesting when I want to know the progress of my file copy process and I can't really see it with cp command. Hence I prefer to use rsync for this purpose while most people usually use rsync for file backup.
shell>rsync --progress -v ./dirty.pcap i-Pcaps/
520535973 100% 7.79MB/s 0:01:03 (xfer#1, to-check=0/1)
sent 520599601 bytes received 42 bytes 8071312.29 bytes/sec
total size is 520535973 speedup is 1.00
Not only you can see the progress but also the average time and its rate. Don't you think it is lovely?