#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
static void sigHandle(int);

void main(){
	if(signal(SIGUSR1, sigHandle) == SIG_ERR){
		perror("Can't handle a signal SIGUSR1.");
		exit(1);
	}
	if(signal(SIGTERM, sigHandle) == SIG_ERR){
		perror("Can't handle a signal SIGTERM.");
		exit(1);
	}
	while(1){
		pause();
	}
}

static void sigHandle(int signum){
	if(signum == SIGUSR1){
		printf("SIGUSR1 has been received.\n");
	}
	if(signum == SIGTERM){
		printf("SIGTERM has been received, terminated.\n");
		exit(0);
	}
}