Appnr

run a defined action if not running some particular processes

PowerNap will run an administrator-specified ACTION when none of a list of
MONITORED_PROCESSES have executed for some number of ABSENT_SECONDS,
checking the process table every INTERVAL_SECONDS.

PowerNap can be used to bring a running system to a lower power state when
none of a list of critical processes have run for some amount of time. It
can act as sort of a "screensaver" for servers, watching the process table
for activity rather than the keyboard or mouse.

For instance, PowerNap can automatically "pm-suspend" a system if no instance
of "kvm" runs for some contiguous block of "300" seconds, checking the process
table every "1" second.