Prevent Sleep When VM is Running

[peterstory]

When running a service within a VM, disabling sleep on the host may be desirable. This could be a per-VM setting, where UTM would set a sleep assertion when the VM is running. For example, see the caffeinate utility:

CAFFEINATE(8)                System Manager's Manual               CAFFEINATE(8)

NAME
     caffeinate – prevent the system from sleeping on behalf of a utility

SYNOPSIS
     caffeinate [-disu] [-t timeout] [-w pid] [utility arguments...]

DESCRIPTION
     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.

     Available options:

     -d      Create an assertion to prevent the display from sleeping.

     -i      Create an assertion to prevent the system from idle sleeping.

     -m      Create an assertion to prevent the disk from idle sleeping.

     -s      Create an assertion to prevent the system from sleeping. This
             assertion is valid only when system is running on AC power.
...

[ro--]

i use the amphetamine app for this purpose. the caffeinate tool does not keep the mac awake the way i want it to.