![]() ![]() See Technical Q&A QA1134: Programmatically causing restart, shutdown and/or logout.Īccording to man shutdown, shutdown -h now and shutdown -r now send processes a TERM signal followed by a KILL signal.Īccording to the Daemons and Services Programming Guide, when you tell loginwindow to log out, processes that support sudden termination are sent a KILL signal, and processes that don't support sudden termination are terminated in different ways: Cocoa applications receive the applicationShouldTerminate: delegate method, foreground applications receive the kAEQuitApplication Apple event, background applications receive the kAEQuitApplication Apple event followed by a KILL signal, and daemons receive a TERM signal followed by a KILL signal after a few seconds. loginwindow is sent the same Apple events as above when you log out, restart, shut down, or put the the Mac to sleep normally. You might see a default desktop picture in the background, which might change to your chosen desktop picture when you select your account. If FileVault is turned on, this also unlocks your disk. The four letter codes for the Apple events are listed in AERegistry.h.Īll System Events commands above send Apple events to the loginwindow process. At the login window, enter your user account password to log in to your Mac. Check your issue if fixed now, and Restart your Mac to Exit from safe mode. Turn on your Mac, and Quickly Press and Hold on Shift key from keyboard and Wait for your Mac see the login screen. Put displays to sleep (10.9 and later): pmset displaysleepnow Intel Mac:-On Intel Mac, Shut down your Mac. ![]() Go to sleep (AppleScript): osascript -e 'tell app "System Events" to sleep' Log out after showing a confirmation dialog: osascript -e 'tell app "System Events" to log out' If your Mac is not completely frozen, close any open apps before you force your computer to shut down. Log out without showing a confirmation dialog: osascript -e 'tell app "System Events" to «event aevtrlgo»' 1.Close open programs first, if possible. Restart after showing a confirmation dialog: osascript -e 'tell app "loginwindow" to «event aevtrrst»' Restart without showing a confirmation dialog: osascript -e 'tell app "System Events" to restart' I am grateful to Graham Perrin and others who revealed this information on StackExchange and elsewhere. 5 is a ‘clean’ shutdown or sleep initiated by the user. Lunar can turn off the MacBook display without having to close the lid of the MacBook. Shut down after showing a confirmation dialog: osascript -e 'tell app "loginwindow" to «event aevtrsdn»' In the software cause codes, there seem to be only two which occur commonly: 3 is a ‘dirty’ shutdown resulting from a forced restart or shutdown. Shut down without showing a confirmation dialog: osascript -e 'tell app "System Events" to shut down' ![]()
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