mac restart command r reboot security drive

Besides, it can delete some system caches like font caches and the kernel cache. Besides, it can also check your startup disk to find and fix errors like running First Aid in Disk Utility.ĭue to these features, it can help you find whether it is a software issue or a system problem that happens to your Mac. It can boot your Mac computer without starting some software like startup programs, system extensions not required by macOS, and fonts that are not installed by macOS.

It is available on all Mac computers like MacBook Pro, MacBook Air, iMac, etc. 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.Mac Safe Mode is a Mac snap-in mode. loginwindow is sent the same Apple events as above when you log out, restart, shut down, or put the the Mac to sleep normally. 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. Put displays to sleep (10.9 and later): pmset displaysleepnow 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' 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»' Restart without showing a confirmation dialog: osascript -e 'tell app 'System Events' to restart' 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'

Mac restart command r reboot security drive