![]() 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. From the Apple icon menu, choose Force Quit to open the Task Manager in a pop-up window. When you make a purchase using links on our site, we may earn an affiliate commission. To shut down your frozen app: Locate the Apple logo in the upper left corner of your toolbar and tap it. loginwindow is sent the same Apple events as above when you log out, restart, shut down, or put the the Mac to sleep normally. Updated We explain how to force quit an app on your Mac, or even force restart macOS, to fix frozen programs that won't respond. Press the Command+Option+Esc keys together to bring up the Force Quit. 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. The closest equivalent to Ctrl-Alt-Delete on a Mac is the keyboard shortcut +Option+Esc. Put displays to sleep (10.9 and later): pmset displaysleepnow If this doesnt close, when the menu appears, press the Alt key, and the Quit option will change to Force Quit. Go to sleep (AppleScript): osascript -e 'tell app "System Events" to sleep' Go to the Dock at the bottom of the screen. Log out after showing a confirmation dialog: osascript -e 'tell app "System Events" to log out' Log out without showing a confirmation dialog: osascript -e 'tell app "System Events" to «event aevtrlgo»' Restart after showing a confirmation dialog: osascript -e 'tell app "loginwindow" to «event aevtrrst»' Use this command to kill an application that does not. What’s nice about this option is that regardless of how the. If you can open a Terminal session, you can force any application to close using the kill command. If the laptop keyboard has Touch ID, that key is also the power button. ![]() On Mac laptops, the power button is in the top right-hand corner of the keyboard. Force Quit Using the Apple Menu The most conventional and effective way to close frozen programs is to go to the macOS® menu bar, located along the top of the screen in the Finder menu. It’s on the left-hand side of the Touch Bar. Restart without showing a confirmation dialog: osascript -e 'tell app "System Events" to restart' Method 1 Use the Apple Menu One of the easier and more universal options to force quit an app is using the Apple menu. Even computers that have a Touch Bar have an Esc key. Shut down after showing a confirmation dialog: osascript -e 'tell app "loginwindow" to «event aevtrsdn»' Shut down without showing a confirmation dialog: osascript -e 'tell app "System Events" to shut down' ![]()
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