RE: " . . . get the same results you can get within the OS . . . "
----------------------------
To each his own.
As an example: Apple has done away with SECURE DELETE for Trash. I imagine there is some work-around within the OS using Terminal . . . BUT "Permanent Eraser" makes it so much simpler. It was easy to locate on Google, simple to download and install, and easy to use. Ta Da!
Personally, I like researching third-party apps. In the process, I often stumble across something else I wouldn't have otherwise found - or even thought to look for. I use Pogue's series of books if I wish to dig deeper into the OS itself . . . or post an inquiry on FineTunedMac.
* early 2011 MBPro with Sierra (no SSD or Fusion Drive)
