That causes the Mac to avoid sleep only as long as it takes to run the command provided, after which the normal sleep rules apply. The number attached to the -t flag is the amount of time in seconds for sleep to be disabled on the Mac.Ĭaffeinate can also be attached to other commands to prevent the Mac from sleeping while that given command runs: You can also run caffeinate for a pre-determined amount of time to prevent sleeping for a specified block of time, say for 4 hours while you download something, and then run it in the background by adding & to it: To stop caffeinate and return to normal sleep behavior, you can hit “Control+C” to quit out of caffeinate as it’s running like this, or you can kill it with the ‘killall caffeinate’ command if desired. To temporarily disable sleep functions regardless of sleep settings, run the following command from Terminal in Mac OS X:Īt the core basic function of the command, caffeinate is all that’s necessary, and while caffeinate is active sleep will be prevented until it’s no longer running.
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How to Disable Sleep with the ‘caffeinate’ Command in Mac OS X A few useful examples are discussed below.
At it’s most simple usage, caffeinate just prevents sleep entirely, but you can modify the command with various flags to prevent just the display from sleeping, provide a specified time to avoid sleeping, prevent sleeping while a command runs, and more.
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