#include<unistd.h>
#include<stdio.h>
#include<signal.h>


void handler(int signal){
	printf("You can't kill us!\n");
}


void main(){
	struct sigaction action;
	action.sa_handler = handler;
	sigaction(SIGINT, &action, 0);
	sigaction(SIGSTOP, &action, 0);
	sigaction(SIGTSTP, &action, 0);
	sigaction(SIGTERM, &action, 0);
	sigaction(SIGKILL, &action, 0);

	for(;;){
		printf("hi\n");
		sleep(1);
	}
}