![]() If you want it to happen after a certain amount of time after you log in, you could use the number parameter to shutdown to specify say 8 hours from now. Using cron to schedule the shutdown is a viable option if you want it to happen at a specified time. If you cant get a key combination to work when restarting your Mac, shut down your Mac first. Maybe you want to refrain from using it when you know the end of your configured work time is coming close. Press and hold all keys in the combination together, not one at a time. However depending on the operation you are currently running, you could end up with an incomplete disk image or a half-formatted partition. So while shutting down in the middle of a disk utility run will abort whatever disk utility is doing, IMHO it would not cause data corruption in general. Ive had to force quit it multiple times recently and just now had to force shut down the mac. With Mac desktops (iMac, Mac Mini, or Mac Pro), unplug the power cable, leave it unplugged for ten seconds, and then plug it back in. If your Mac is running, this will forcibly cut the power to it and force it to restart. Restart your Mac On your Mac, choose Apple menu > Restart. Something def happened in a recent browsercompany Arc update. On a modern MacBook without a removable battery, press the Power button and hold it down for ten seconds. You may lose unsaved changes in open documents. having unsaved work and do not want to be killed forcibly. Important: You can force a shutdown if necessaryfor example, if your Mac becomes unresponsiveby pressing and holding the power button until your Mac shuts down. The default is that applications still get SIGTERM and have to opt-in for SIGKILL and they can mark themselves as "dirty", i. In the Terminal app on your Mac, enter the following command: sudo systemsetup -setwaitforstartupafterpowerfailure seconds Replace seconds with the number of seconds before the computer starts after a power failure. ![]() This is supposed to make shutdown faster. If an app is causing the issue where your Mac is prevented from shutting down, you may want to force close the app so that your Mac is then allowed to turn off. IIRC in Snow Leopard (10.6) Apple added something called fast-shutdown (or similar) which will send processes that have been flagged as being ok with it a SIGKILL signal, shutting them down without chance for cleanup work. Reinstall macOS Extra Tip: How to Recover Lost Files After Force Shutdown or macOS Reinstall 1. This shortcut will open the window, where you can select running apps and force quit them. So generally, when an application receives this signal ( SIGTERM(inate)) it should wrap up and exit. To call the Force Quit Applications window, press Command+Option+Esc on your Mac keyboard. ![]() The shutdown command sends running processes a signal to terminate, giving them a chance to do clean up work, if needed. ![]()
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