I have a bash script to test how a server performs under load.
num=1
if [ $# -gt 0 ]; then
num=$1
fi
for i in {1 .. $num}; do
(while true; do
{ time curl --silent 'http://localhost'; } 2>&1 | grep real
done) &
done
wait
When I hit Ctrl-C, the main process exits, but the background loops keep running. How do I make them all exit? Or is there a better way of spawning a configurable number of logic loops executing in parallel?
Here's a simpler solution -- just add the following line at the top of your script:
trap "kill 0" SIGINT
Killing 0
sends the signal to all processes in the current process group.