week06/ex4.c
// SIGUSR /can/ be caught or ignored, so this will be executed when signal will be sent
SIGUSR /can/ be caught or ignored, so this will be executed when signal will be sent
SIGUSR / can / be caught or ignored so this will be executed when signal will be sent
void sigusrHandler(int signum)
{
    printf("Don't know this signal yet!\n");
    exit(0);
}
void sigusrHandler ( int signum ) { printf ( " \n " ) ; exit ( 0 ) ; }
SIGUSR /can/ be caught or ignored, so this will be executed when signal will be sent
SIGUSR / can / be caught or ignored so this will be executed when signal will be sent