![]() ![]() I have such a Macro I use daily when I'm ready to shutdown. While there is not a "Shutdown" trigger, you can write a Macro to perform whatever actions you want, then shutdown your Mac. So is there a reliable way to change the value of a variable on shutdown. The hours and minutes in the second time format may be separated by a colon (``:'') for backward compatibility. Developers are encouraged to file a bug with the OS vendor, should theyĮncounter an issue with this functionality. Programs are expected to take only enough time to flush all dirty data and exit. The SIGKILL will follow the SIGTERM by an intentionally indeterminate period of ![]() Upon shutdown, all running processes are sent a SIGTERM followed by a SIGKILL. Nal is then sent to launchd(8) to respectively halt, reboot or bring the system down to single-user state (depending on the above options).Ī scheduled shutdown can be canceled by killing the shutdown process (a SIGTERM should suffice). If `-' is supplied as an option, the warning message is read from the standard input.Īt intervals, becoming more frequent as apocalypse approaches and starting at ten hours before shutdown, warning messages are displayed on the terminals of allĪt shutdown time a message is written to the system log, containing the time of shutdown, the person who initiated the shutdown and the reason. Number minutes and the second at the absolute time specified.Īny other arguments comprise the warning message that is broadcast to users currently logged into the system. Two formats: +number, or yymmddhhmm, where the year, month, and day may be defaulted to the current system values. Time Time is the time at which shutdown will bring the system down and may be the word now (indicating an immediate shutdown) or specify a future time in one of OS X uses this mode automatically with sup. This simulates a dirty shutdown to permit a later automatic power on. u The system is halted up until the point of removing system power, but waits before removing power for 5 minutes so that an external UPS (uninterruptible s The system is put to sleep at the specified time. r The system is rebooted at the specified time. o If -h or -r is specified, shutdown will execute halt(8) or reboot(8) instead of sending a signal to launchd(8). n If the -o is specified, prevent the file system cache from being flushed by passing -n option to halt(8) or reboot(8). The -k option does not actually halt the system, but leaves the system multi-user with logins disabled (for all but super-user). h The system is halted at the specified time. ![]() The shutdown utility provides an automated shutdown procedure for super-users to nicely notify users when the system is shutting down, saving them from systemĪdministrators, hackers, and gurus, who would otherwise not bother with such niceties. Shutdown - close down the system at a given time #Eventscripts download mousedown manualEnter,then you get: SHUTDOWN(8) BSD System Manager's Manual SHUTDOWN(8) ![]()
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