print_usage(){
	echo
	echo "script usage: $(basename $0) [-s node] [-k node] [-m] [-h] " >&2
	echo "type: '$(basename $0) -h' for help"
}

print_help(){
	echo
	echo "$(basename $0): a useless script"
	echo
	echo "options:"
	echo "  -s <node>  Start the service on the specified node"
	echo "  -k <node>  Kill the service on the specified node"
	echo "  -m  Monitor function: display all the nodes on which the service is runnig"
	echo "  -h  Print this help message"
	command_parsed=1

	return 0
}

start_node(){
	
	ssh $1 'sleep 300 &> /dev/null &' #da sostituire con il comando per xfreerdp
	echo "Service started on $1"

	#aggiungere la gestione di un nome errato
		
	command_parsed=1
	return 0
}

start_1(){
	for i in {0..12}
		do
  	 		start_node ${LCM1[i]}
		done
	return 0
}

start_2(){
	for i in {0..14}
		do
			start_node ${LCM2[i]}
		done
	return 0	
}

monitor(){
	#da migliorare: lentissima!
	echo "Service running on:"
	for i in {0..12}
		do
			#printf "${LCM1[i]}: "
 	 		ssh ${LCM1[i]} 'ps aux | grep "sleep 300" | grep -v grep' > /dev/null
			if [ $? -eq 0 ]; then
				echo ${LCM1[i]}
			fi
		done
	for i in {0..14}
		do
			ssh ${LCM2[i]} 'ps aux | grep "sleep 300" | grep -v grep' > /dev/null
			if [ $? -eq 0 ]; then
				echo ${LCM1[i]}
			fi
		done

	command_parsed=1
	return 0
}

kill_process(){
	
	ssh $1 'pkill sleep' #pericoloso (testato e funzionante con pkill xfreerdp)

	#aggiungere la gestione di un nome errato

	command_parsed=1
	return 0
}

kill_1(){
	for i in {0..12}
		do
			kill_process ${LCM1[i]}
		done
	return 0
}

kill_2(){
	for i in {0..14}
		do
			kill_process ${LCM2[i]}
		done
	return 0
}