#sigusr2

#include  <signal.h>

#include  <unistd.h>

static void sig_usr(int); /* one handler for both signals */

int

main(void)

{

  if (signal(SIGUSR1, sig_usr) == SIG_ERR)

    perror("can't catch SIGUSR1");

  if (signal(SIGUSR2, sig_usr) == SIG_ERR)

    perror("can't catch SIGUSR2");

  for ( ; ; )

    pause();

}

static void

sig_usr(int signo)    /* argument is signal number */

{

  if (signo == SIGUSR1)

    printf("received SIGUSR1\n");

  else if (signo == SIGUSR2)

    printf("received SIGUSR2\n");

  else {

    printf("received signal %d\n", signo);

    abort();

    exit(1);

  }

  return;