答案1
非常感谢马克·普洛特尼克!
macOS Sierra、El Capitan、优胜美地
Choose Apple menu () > System Preferences, then click Users & Groups.
Click lock, then enter an administrator name and password.
From the list of users, Control-click or right-click the user that you want to rename. Choose Advanced Options from the shortcut menu.
Change the name in the “Full name” field, then click OK.