Bash script for stress testing a system by spawning multiple CPU-intensive processes. The script includes a signal handler to clean up any child processes before exiting. Useful for stress testing and space heating purposes

test_CPU_load.sh

#!/bin/bash

cleanup() {
  # Kill any child processes
  echo "Cleaning up child processes..."
  pkill -P $$

  # Exit the script
  exit 0
}

cpu_num=$1

if [ $# -ne 1 ]; then
  cpu_num=$(nproc)
fi

# Register the cleanup function to run on SIGINT and SIGTERM signals
trap cleanup SIGINT SIGTERM

for i in `seq $cpu_num`
do
	echo "cpu$i"
	while true
	do
		j=1
	done &
done

# Wait for child processes to complete
wait