Many scripted macOS workflows require determining the username of the currently logged-in user. Whether you wish to execute a command as that user via su or you just want to log the username during your script's execution, you may need to query macOS for this information. This is a solved problem, and Armin Briegel's excellent article on Getting the current user in macOS outlines the best method. In addition to determining the logged-in user's username, you may also need their user ID number,...
