#include <fcntl.h>
main()
{
unsigned long int A;
int fd;

mkdir("/tmp/RBL", 0750);
fd = open("/tmp/RBL/tempfile", O_CREAT | O_RDWR | O_TRUNC, 0640);
//fd = opntmp("/tmp/RBL/tempfile", 1234567);
printf("%d\n", fd);

A = 0x1234567890123456L;
}