Weak AirPort Wi-Fi signal strength in the office, there’s an app for that

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No, I’m not talking about an app you have to install. Apparently there is an app bundled right on the Mac. Yep. The trick is that it’s not in the usual places. To run it:

  1. Open the Terminal app
  2. Type: /System/Library/CoreServices/Wi-Fi\ Diagnostics.app

You should see a screen like:

(Hint from OSXDaily.com.)

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