Accessing information about you as a user and a great deal more, using the Advanced Options dialog for user accounts, and Directory Utility.
Directory Utility
Changing permissions is straightforward in the Finder or command line. But how would you go about changing a file/folder’s owner or group?
These services don’t often appear in the limelight, but the recent vulnerability in High Sierra reminds us how important they still are.
The Eclectic Light Company 