![]() No data is saved and no dialogs are confirmed, the shut down happens instantly. Hit the return key and authenticate with an administrative password to immediately shut down the Mac.Enter the following command syntax exactly:.Open the Terminal in Mac OS (found in /Applications/Utilities/ folder).If you feel like trying this yourself (and you have all data saved and nothing important open) do the following: Unless you’re actively logged in as the root user (via single user or otherwise), you will need to prefix the shutdown command with ‘sudo’ to give the command superuser privileges, thus requiring an administrative password. There is no warning and no dialog, it happens instantly. To turn off a Mac with the shutdown command, you will use the -h flag and give the time for ‘now’ making the syntax like so:Īs soon as you hit return and authenticate the command, the Mac halts and kills all applications and processes and shuts the computer down. Shutting Down a Mac from Command Line with ‘shutdown’Īpt for the name, the ‘shutdown’ command can shutdown a Mac as well as reboot a Mac via Terminal. This could lead to data loss, so be sure you are ready to turn off a Mac if you issue these commands. Instead, the Mac will instantly terminate any and all activity going on and immediately shut down the computer. There is no confirmation, no warning dialog, no stopping to save documents, no asking to close apps or save anything. The Mac Terminal offers many commands for handling various tasks and system functions, and so naturally the command line also offers a method to shutdown a Mac computer from the Terminal as well.Īn important word of warning: shutting down a Mac through the command line happens instantaneously. bat batch file.There are several ways to shut down a Mac from the command line, we’ll cover two of the most simple methods using easy syntax. Using Notepad, add these four lines of code to a blank file, then save the file as a. The fourth line of code, shutdown -s, is the command to shut down Windows and the computer. However, if desired, press any key on the keyboard to skip the timer and immediately execute the next line of code. ![]() Using the timeout command, a countdown is displayed to let you know how much time is left before shutting down. The %timer% after timeout is the variable storing the numeric value, the number of seconds, entered by the user, for which Windows waits. The third line of code, timeout %timer%, is the command telling Windows to wait a period of time before executing the next line of code. Without the /p switch, the timer variable would be assigned the text after the equal sign, and no user prompt would show. The /p switch makes the prompt appear, with the text between the quotes after the equal (=) sign. The set command initializes the variable, timer in our code, and assigns the value entered by the user to that variable. ", is the command that allows the user to define the timer period. The second line of code, set /p timer= ". Set /p timer= "Enter the desired shut down timer in seconds: " The following example code can automatically shut down your computer-based on a timer defined by the user. Shut down the computer after a user-defined timeĪ script to shut down a Windows computer after a user-defined time consists of four lines of code. Using Notepad, add these three lines of code to a blank file, then save the file as a. The third line of code, shutdown -s, is the command to shut down Windows and the computer. However, you can press any key on the keyboard to skip the rest of the timer and immediately execute the next line of code. Using the timeout command, a countdown is displayed on the command line window, showing you how much time is left before the computer shuts down. ![]() You can set this value to your desired wait period. The number after timeout is the amount of time, in seconds, that Windows waits. The second line of code, timeout 30, is the command telling Windows to wait a time before executing the next line of code. Using off keeps the command line window clean. The first line of code, off, stops the echoing of commands in the Windows command line window. The following example code can automatically shut down your computer. Shut down the computer after a pre-defined timeĪ script to shut down a Windows computer after a pre-defined time consists of three lines of code.
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