Signal User Space C Program Lets start with writing a simple signal user space C program : #include<signal.h> #include<stdio.h> /* Handler function */ void handler(int sig) { printf("Receive signal: %u\n", sig); }; int main(void) { struct sigaction sig_a; /* Initialize the signal handler structure */ sig_a.sa_handler = handler; sigemptyset(&sig_a.sa_mask); sig_a.sa_flags = 0; /* Assign a new handl