#include <linux/input.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>


void usage()
{
  fprintf(stderr,"Usage: beep <device>\n");
}


int main(int argc, char* argv[])
{
  if (argc!=2) {
    usage();
    exit(1);
  }

  const char* dev_fn = argv[1];

  int fd = open(dev_fn,O_WRONLY);
  if (fd==-1) {
    perror("open()");
    exit(1);
  }

  struct input_event ev;
  ev.type = EV_SND;
//  ev.code = SND_BELL;
//  ev.value = 1;
  ev.code = SND_TONE;
  ev.value = 10000;

  ssize_t b = write(fd,&ev,sizeof(ev));
  if (b != sizeof(ev)) {
    perror("write()");
    exit(1);
  }

  exit(0);
}