suspend-resume.sh

#!/bin/bash 

screen -wipe
screen -mdS mytest bash -c 'for i in {1..10}; do echo "this is $i" > myfile; sleep 1; done' 
PID=$(screen -list | grep mytest | cut -f1 -d'.' | sed 's/\W//g')
echo "PID is: $PID"

pause () {
	echo "pausing process $PID"
	kill -STOP $PID
}

resume () {
	echo "resuming process $PID"
	kill -CONT $PID
}

is_alive () {
	if [[ "$(ps -o pid= -p $PID)" == "$PID" ]]; then 
		return 0
	else 
		return 1
	fi
}

on_exit () {
	kill -9 $PID
}

trap on_exit INT

while is_alive; do 
	echo "$PID is still alive..."
	sleep 0.1
	pause
	read -p "Press [Enter] key to continue..."
	resume
done