>From: Mike Long <mike.long@analog.com>
>#include <unistd.h>
>#include <fcntl.h>
>
>void beepbeep_beepbeep_yeah(void)
>{
>  const char buf = '\007';
>  int f = open("/dev/console", O_WRONLY | O_NOCTTY);
>  if (f >= 0) {
>    write(f, &buf, 1);
>    close(f);
>  }
>}

Or perhaps:

#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

int beep(void)
{
	int fd;

	if ((fd = open("/dev/console", O_WRONLY | O_NOCTTY)) >= 0) {
		if (write(fd, "\007", 1) != 1) {
			perror("beep: write(2)");
			return(-1);
		}
		return(0);
	}
	perror("beep: open(2)");
	return(-1);
}

Max