Network speed test with nc or ssh

gistfile1.txt

On the receiver
    nc -l -v 1234 > /dev/null
On the sender
    dd if=/dev/zero  bs=4096 count=104800 | nc <host>  1234
    
if can be a file if desired, but I found there were no real differences. Do NOT use
/dev/urandom, as urandom itself can be a huge bottleneck (depending on hardware)

A file might look like this:

    dd if=/volume1/video/test.mp4  bs=1024K | nc <host>  1234
    
You can also use ssh, although ssh does encryption and compression, so with a
realistic load, nc tends to be better:

dd if=/dev/zero bs=4096 count=1048576 | ssh user@host 'cat > /dev/null'

A large file as input may be a more realistic load.