Keep a Mountain Lion system from ever going to sleep

README.md

Mountain Lion Narcolepsy

I have experienced Mountain Lion on a Mac mini will go to sleep regardless of the Energy Saver settings in the System Preferences. After some reading, it seems OS X Mountain Lion has very aggressive power management, which will put the system to sleep against your (my) will.

This is my attempt to create a Launch Agent, which will use the system command caffeinate to prevent sleep indefinitely.

Copy the plist into ~/Library/LaunchAgents, then, in a Terminal session, run the command to load it up:

launchctl load ~/Library/LaunchAgents/com.sprocketlight.wakey-wakey.plist

Resources

http://arstechnica.com/apple/2012/07/os-x-10-8/18/

http://useyourloaf.com/blog/2012/08/09/keeping-mountain-lion-awake.html

com.sprocketlight.wakey-wakey.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.sprocketlight.wakey-wakey</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/bin/caffeinate</string>
        <string>-s</string>
    </array>
    <key>KeepAlive</key>
    <true/>
</dict>
</plist>