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Add Check Network Quality Stats From The Command Line as a Mac TIL

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README.md
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For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
_1442 TILs and counting..._
_1443 TILs and counting..._
---
@@ -571,6 +571,7 @@ _1442 TILs and counting..._
- [Access All Screen And Video Capture Options](mac/access-all-screen-and-video-capture-options.md)
- [Access System Information On OS X](mac/access-system-information-on-osx.md)
- [Access Unsupported Screen Resolutions With RDM](mac/access-unsupported-screen-resolutions-with-rdm.md)
- [Check Network Quality Stats From The Command Line](mac/check-network-quality-stats-from-the-command-line.md)
- [Clean Up Old Homebrew Files](mac/clean-up-old-homebrew-files.md)
- [Convert An HEIC Image File To JPG](mac/convert-an-heic-image-file-to-jpg.md)
- [Default Screenshot Location](mac/default-screenshot-location.md)

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mac/check-network-quality-stats-from-the-command-line.md Normal file
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# Check Network Quality Stats From The Command Line
MacOS comes with a little known CLI utility for checking your current network
quality statistics. It is aptly named `networkQuality`.
Here is what a basic run of the tool might output:
```bash
$ networkQuality
...
Downlink: capacity 281.430 Mbps, responsiveness 101 RPM - Uplink: capacity 16.629 Mbps, responsiveness 101 R
Downlink: capacity 285.534 Mbps, responsiveness 101 RPM - Uplink: capacity 16.028 Mbps, responsiveness 101 R
==== SUMMARY ====
Uplink capacity: 22.982 Mbps
Downlink capacity: 288.152 Mbps
Responsiveness: Low (93 RPM)
Idle Latency: 26.375 milliseconds
```
You can get an even more detailed summary with the `-v` option:
```bash
$ networkQuality -v
...
==== SUMMARY ====
Uplink capacity: 18.257 Mbps (Accuracy: High)
Downlink capacity: 469.355 Mbps (Accuracy: High)
Responsiveness: Medium (252 RPM) (Accuracy: High)
Idle Latency: 25.583 milliseconds (Accuracy: High)
Interface: en0
Uplink bytes transferred: 19.750 MB
Downlink bytes transferred: 488.265 MB
Uplink Flow count: 8
Downlink Flow count: 12
Start: 9/24/24, 11:06:20 AM
End: 9/24/24, 11:06:30 AM
OS Version: Version 13.5.2 (Build 22G91)
```
See `man networkQuality` for more details.
[source](https://cyberhost.uk/the-hidden-macos-speedtest-tool-networkquality/)