Stack Engineer

Setup a Custom Message on the Login Screen

You can display a custom message for everyone to see on the login screen of your macOS system.

Set Custom Message

To set the custom message, run the following command from the terminal.

sudo defaults write /Library/Preferences/com.apple.loginwindow LoginwindowText "Powered by StackEngineer.com"

Remove Custom Message

To delete the custom message, run the following command from the terminal.

sudo defaults delete /Library/Preferences/com.apple.loginwindow LoginwindowText