pv sourcefile > destfile

rsync --progress file1 file2

dd if=fromfile of=tofile & DDPID=$! ; sleep 1 ; while kill -USR1 $DDPID ; do sleep 5; done

dd if=/dev/sdc of=/dev/sdd  conv=notrunc & while killall -USR1 dd; do sleep 5; done

dc3dd progress=on bs=512 count=2048 if=/dev/zero of=/dev/null

copy(){ cp -v "$1" "$2"&watch -n 1 'du -h "$1" "$2";printf "%s%%\n" $(echo `du -h "$2"|cut -dG -f1`/0.`du -h "$1"|cut -dG -f1`|bc)';}