Mac pro going to sleep on nohup

sleep-wakessh

I have the following scenario. I have shell scripts that I want to run remotely on my mac pro, so I ssh in, launch them with nohup, and log out. I've done this for years on linux based machines, and I just started trying it out on the new mac pro. However, I find that the mac goes to sleep while these are running, and it takes much longer to finish. Obviously I can disable sleep in the energy preferences, but there are definitely times when I want it to let it power down. Is there anything I could do, in terms of a command line argument, that would disable sleep while the process was running?

Best Answer

caffeinate your scripts

Use the OS X built-in caffeinate command to prevent your Mac going to sleep. caffeinate is the recommended way of lodging a temporary restriction against your Mac entering a low power state.

caffeinate creates assertions to alter system sleep behavior. If no assertion flags are specified, caffeinate creates an assertion to prevent idle sleep. If a utility is specified, caffeinate creates the assertions on the utility’s behalf, and those assertions will persist for the duration of the utility’s execution. Otherwise, caffeinate creates the assertions directly, and those assertions will persist until caffeinate exits.

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Way to remotely restart Finder (or wake-up the desktop) from SSH

This quits the Finder by sending it the "quit" AppleEvent, which is the same signal the system sends when logging out or restarting via the GUI:

osascript -e 'quit application "Finder"'

I (also) don't think quitting the Finder will fix the wake-from-sleep issue, though.

MacOS – Is it possible to configure Internet Sharing to allow the computer to sleep

I have experimented with using ControlPlane to achieve what you want. My preliminary result is that it will do what you want.

ControlPlane detects changes to your system called 'evidence sources'. Changes are evaluated with 'rules' which define a change in 'context'. Associated with each context are 'actions'.

One of the 'evidence sources' is a sleep/wake event. So I have configured a rule so that on a sleep event (e.g. you have clicked sleep in the Apple menu), the context 'Sleepy Time' is triggered. And for this context I have used the action 'ToggleInternetSharing' to off.

After clicking on Sleep, I get an alert saying that Internet Sharing is being turned off and after a little while (seems like forever but is probably only 10 or 20 seconds) the Mac goes to sleep.

And I have a second rule so that on a wake event the context 'Waking Up' is triggered and this has the action to set 'ToggleInternetSharing' on.

My Rules and Actions:

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Try it!

This is just scratching the surface of what ControlPlane can do.

Best Answer

caffeinate your scripts

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