Check data transfer / bandwidth

I found this interesting !

dd if=/dev/zero of=/dev/null bs=1M count=32768

It returns the data transfer rate.

[email protected]:~$ dd if=/dev/zero of=/dev/null bs=1M count=32768
32768+0 records in
32768+0 records out
34359738368 bytes (34 GB) copied, 3.72538 s, 9.2 GB/s

It says my laptop has data transfer rate = 9.2GBps :)