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Taylor Martin/CNET If you ever find yourself in a situation where you want to shut down your Mac after a time-consuming process has finished, such as downloading and installing updates, or exporting a video, what you need is a shutdown timer. A few applications for this exist in the Mac App Store, such as and the aptly named. But you don't need any dedicated software. Photoshop 6.0 for mac crashes.

All you need is this simple trick. Read more: If you're looking for a shutdown timer on Windows, there's, as well.

A built-in power schedule Under Energy Saver settings, MacOS has a built-in wake and sleep schedule. Taylor Martin/CNET.

To enable it and create a schedule, go to System Preferences > Energy Saver and click Schedule. in the lower right corner of the window. There you can set a time and day (weekends or weekdays, too) that the Mac will start up or wake, as well as a time and day(s) when it will restart, shut down or sleep. As useful as the schedule feature is, it's limited in how it can work. Still, you could use it to shut down your computer at a specific time. Just select a time for the sleep or shutdown to happen after the process is expected to finish.

Make your own shutdown timer If you want a shutdown timer that's more adaptable, you only need to know a few terminal commands. The shutdown command will, as expected, shut down your Mac when used in Terminal. But there are some important options that you will also want to use to make this shutdown timer meet your needs.

• -h will halt the system at a specified time. • -r will reboot instead of shutdown. • -s will put the Mac to sleep instead of shutdown. There are other options, which you can read more about in 's, but for the purpose of a shutdown timer, -h, -r and -s are likely all you will need to know. This is a shutdown timer command for 15 minutes with a pid of 842. Taylor Martin/CNET If you remember this shutdown command, you can simply open Terminal and enter the command to create a shutdown timer. Some example shutdown timer commands would look like: • A 15-minute shutdown timer: sudo shutdown -h +15 • A 30-minute restart timer: sudo shutdown -r +30 • A 1-hour sleep timer: sudo shutdown -s +60 When you enter one of these commands, you will need to enter the password for the user account and press return.

The shutdown timer will then be created, giving you the exact time and date that the shutdown/restart/sleep process will occur. Rom emulator for mac. It will also give you the process ID, also known as a pid, which is a three- to four-digit number.