pi-fancontrol-service-controller.sh

#!/bin/bash
#

function get_pid {
   local PID="$(cat /tmp/pi-fancontrol-bash.pid 2>/dev/null)"
	 echo $PID
}

function d_start ( ) 
{ 
	# check if already started
	local pid="$(get_pid)"
	if [ ! -z $pid ]; then
		echo "service is running; Please stop the service before starting"
		exit 1
	fi
	echo  "Pi Fan Control Bash: starting service" 
	./fancontrol-service.sh &
	_pid=$! 
	echo "$_pid" > /tmp/pi-fancontrol-bash.pid
	echo  "PID is $(cat /tmp/pi-fancontrol-bash.pid)" 
}
 
function d_stop ( ) 
{ 
	local pid="$(get_pid)"
	if [ -z $pid ]; then
		echo "service is not running; Please start the service before stoping"
		exit 1
	fi
	echo  "Pi Fan Control Bash: stopping Service (PID = $(cat /tmp/pi-fancontrol-bash.pid))" 
	kill $(cat /tmp/pi-fancontrol-bash.pid) 
	rm  /tmp/pi-fancontrol-bash.pid
 }
 
function d_status ( ) 
{ 
	ps  -ef  |  grep fancontrol-service.sh |  grep  -v  grep 
	echo  "PID indicate indication file $(cat /tmp/pi-fancontrol-bash.pid 2> /dev/null)" 
}


 
# Management instructions of the service box 
case "$1" in 
	start)
		d_start;;
	stop)
		d_stop;;
	status)
		d_status;;
	*)
		echo  "Usage: $0 {start | stop | status}" 
		exit  1;;
esac

exit  0