➜ networkQuality -s
==== SUMMARY ====                                                                                         
Upload capacity: 174.183 Mbps
Download capacity: 143.084 Mbps
Upload flows: 20
Download flows: 20
Upload Responsiveness: Medium (940 RPM)
Download Responsiveness: High (2981 RPM)

Nice to get a quick speed check from the command line. networkQuality -s