TLDR
Enter a command. For example: whatis, look, archey, system_profiler.

networkQuality

 
Measure the network quality by connecting to the internet. More information: https://support.apple.com/HT212313.
 
  • Test the network quality for the default interface:
     
    networkQuality
     
  • Test the upload and download speeds sequentially instead of in parallel:
     
    networkQuality -s
     
  • Test a specified network interface:
     
    networkQuality -I {{en0}}
     
  • Test the network quality with verbose output:
     
    networkQuality -v

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