trap.sh

#!/bin/sh 


# this will fire even when sleep is working (when assuming bash)
ok(){
	echo "TRAP"
	exit 2
}

trap "ok"  SIGINT

echo "Start sleeping a minute, send me a signal using"
echo "kill -s SIGINT $$"

sleep 60 & wait

echo "Normal quit"

useless-trap.sh

#!/bin/sh 


# this will only fire when sleep is done (when assuming bash)
ok(){
	echo "TRAP"
	exit 2
}

trap "ok"  SIGINT

echo "Start sleeping a minute, send me a signal using"
echo "kill -s SIGINT $$"

sleep 60

echo "Normal quit"