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How to temporary prevent Mac OS X from sleeping

Sometimes you don't want your Mac OS X Mountain Lion powered computer to go to sleep, here's a nice little trick how to temporary prevent a Mac from going into a sleep mode.

 
  Author: mat | Version: 10.8 Mountain Lion | 10th July 2013 |  
 
 
1.
 

Click the Finder icon in the right corner of your Mac screen, enter terminal in the search field and click to open Terminal (see picture).

 
 
2.
 

A terminal command line window should open.

Not simply enter caffeinate and press Enter.

Your Mac should now be prevented from going into the sleep mode. To deactivate the caffeinate close the Terminal window or press Ctrl + C.

 
 
3.
 

If you want to temporary prevent your Mac from falling asleep, you can specify the amount of seconds you don't want it to sleep.

Again in the Terminal window enter caffeinate -t 100000 and press Enter.

-t is a time attribute and 100000 is a number of seconds you want your Mac to stay awake. You can specify any amount of seconds you want. To stop caffeinate close the window or press Ctrl + C.



 
 
 
   
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Lock and Key York explains how to temporarily prevent Mac OS X from sleeping to keep your work uninterrupted. You can adjust settings in System Preferences under Energy Saver, or use the Terminal command caffeinate for short-term prevention. This is useful during downloads, presentations, or long-running tasks. By following these simple steps, you ensure your Mac stays awake when needed without permanently changing sleep settings, maintaining both productivity and energy efficiency. https://lockandkeyyork.co.uk
 
 
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Locksmith near me explains how to temporarily prevent Mac OS X from sleeping when you need uninterrupted performance. You can adjust Energy Saver settings in System Preferences to extend sleep timers or disable them for a session. Another quick option is using the Terminal command caffeinate, which keeps your Mac awake until you end the command. These simple methods ensure smooth downloads, presentations, or tasks without permanently altering your system’s sleep configuration. https://halifaxlockandkey.co.uk
 
 
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Duckworth, 30th Sep 2025, 8:37 AM
That's a handy tip! I've definitely been in situations where my Mac keeps going to sleep mid-process, and it's frustrating. I usually end up wiggling the mouse like crazy, which isn't ideal. It reminds me of how sometimes I have to keep Sprunki (my pet hamster!) active so he doesn't just curl up and nap all the time. This terminal command is a much more elegant solution. Thanks for sharing! https://sprunkionline.io/

 
 
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