The resulting window shows you what version of
Mac OS X you currently have installed. Knowing the version of your operating system can
be very helpful should you need to troubleshoot any issues in the future.
Version
Notice that the version of Mac OS X used for this book is Mac OS X 10.5, otherwise known
as Leopard. Apple loves to name the different versions of Mac OS X after big cats. Mac OS X
10.4 was called Tiger, 10.3 was Panther, 10.2 was known as Jaguar, 10.1 was dubbed Puma, and
10.0??™s nom de plume was Cheetah.
18 How to Do Everything: Mac
Restart, Shut Down, and Put to Sleep Your Mac
Your Mac may need to be restarted from time to time (for various reasons that will be covered in
later chapters), or you may just want to turn it off when you??™ve finished your work. Do you need
to turn off your Mac every time you quit using it? No. Putting the Mac to sleep is a great way to
give your Mac a rest until you need to use it again.
Restart Your Mac
To restart your Mac, choose Apple | Restart. You are asked if you are sure you want to restart.
Since you??™re new to this sort of thing, go ahead and click the Restart button.
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