macOS command-line tools you might not know about

Neat, I was not aware of `networkQuality`. A good replacement for opening up Speedtest or whatnot when you just want to figure out if the network is slow or something else is up.

I can't find any (official) documentation on how it measures the speed. Against which target?

Edit: Found https://www.macinstruct.com/tutorials/how-to-check-your-macs... which says:

"The networkquality tool uses Apple’s CDN (https://mensura.cdn-apple.com/api/v1/gm/config) as a target"

The contents of this file (for me):

  { "version": 1,
    "test_endpoint": "sesto4-edge-bx-021.aaplimg.com",
    "urls": {
        "small_https_download_url": "https://mensura.cdn-apple.com/api/v1/gm/small",
        "large_https_download_url": "https://mensura.cdn-apple.com/api/v1/gm/large",
        "https_upload_url": "https://mensura.cdn-apple.com/api/v1/gm/slurp",
        "small_download_url": "https://mensura.cdn-apple.com/api/v1/gm/small",
        "large_download_url": "https://mensura.cdn-apple.com/api/v1/gm/large",
        "upload_url": "https://mensura.cdn-apple.com/api/v1/gm/slurp"
     }
  }