![]() ![]() ![]() Press Shift+ +Q to log out, confirm the logout, and then click Shut Down in the Login dialog box. Still, if you are leaving your Mac for a long time, you might want to shut it down. Just wait for things to finish, with either a reboot or an error message. Logging in is much faster because you don't have to wait for your computer to start up. First thing, never turn off your Mac (or PC) during a major upgrade. Hit the return key, authenticate with sudo to. Enter the halt command syntax exactly as described: sudo halt. The process and syntax for ‘halt’ to turn off a Mac is as follows: Open the Terminal. The ‘halt’ command can also instantly shut down a Mac via the command line. This stops all the processes that are running and puts your Mac in a safe condition. Shutting Down a Mac via Terminal with ‘halt’. Most of the time, when you are done working with your computer, you should simply log out. If nothing happens, you know that you never need to press the Power key again.īecause today's machines use very little energy, there isn't really much reason to shut them off. If the dialog box appears, you can use its controls to shut down, restart, or put your Mac to sleep. If your keyboard has the Power key, press it and see whether anything happens. Newer Apple keyboards don't have this key, and some Macs running Mac OS X don't support it even if the keyboard has the Power key. Some Mac-compatible keyboards (not produced by Apple) and some older Apple keyboards have a Power key, which you can use to start the machine when it is off or to bring up a dialog box that enables you to shut down, restart, or put your Mac to sleep. The processes that are currently running will be stopped (you will first be prompted to save any open documents that have unsaved changes), and you will return to the Login dialog box. In the resulting confirmation dialog box, press Return or click Log Out (if you don't do this within two minutes, the system will log you out automatically). When you log out, all the processes currently running are stopped and the user account is "closed." To log out of the current user account, choose Apple menu, Log Out (or press Shift+ +Q). Under Mac OS X, you can still do this, but most of the time you will log out instead. Under older versions of the Mac OS, when you were done working with the computer and wanted to "turn it off," you shut it down using the Shut Down command. You will then move to the desktop for that user account. To log in, you simply select the name of the user account, enter the password, and press Return. As you learned earlier, you must log in to be able to use a Mac OS X?powered Mac.
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