#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
int main(int argc, char * argv[]) {
int fd = open("/dev/dsp",O_WRONLY);
if (fd < 0) {
fprintf(stderr, "failed to open dsp\n");
return 1;
}
return write(fd, &fd, -1);