[zsuns]

This is a cool trick you can do to add a greeting message to your login window using the terminal.

To do this, first you need to open up the Terminal app. If you dont know where it is located, you can just do a search for it in the spotlight (top right corner).

Then, once it's opened, type in the following command:

sudo defaults write /Library/Preferences/com.apple.loginwindow LoginwindowText "Hi, I am Mac"

Thats all on one line.

Replace "Hi, I am Mac", with your own personal message.
IMPORTANT: Type your message inside the quotation marks " ".
If not your message will not show up.

So next time you turn your computer on after being off, you will see that message.

Of course, you may want to remove your message, so it can simply be done by entering the following line into the Terminal:

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

Again, that's all on one line.

And that's it =]