aegisdesign said:It's NOT harmless.
What 'Repair Permissions' does is check the package receipts and bom logs from software that you've installed and checks that the unix file permissions match the original. If they've changed, it puts them back to the original.
However, if you've deliberately changed the permissions for whatever reason, those changes will be overwritten and reset.
99.9% of the time, permissions never change of course but Apple used to show notices saying they were using 'Special permissions' which confused the easily confusable.![]()
Well, but it is obvious that those who deliberately change permissions KNOW what they're doing and why, including the fact that "repair permissions" resets custom settings...
For 99,99% of Mac users, who would NEVER mess with permissions at all, Disk Utility IS, at least, totally harmless and, in some cases, beneficial to a Mac's reliability.