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#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
int main(int argc, char **argv)
{
unsigned char twelve = 12;
int maj;
struct stat sb;
fstat(0, &sb);
maj = major(sb.st_rdev);
if (maj != 3 && (maj < 136 || maj > 143)) {
if (ioctl (0, TIOCLINUX, &twelve) < 0) {
printf ("serial\n");
return 1;
} else {
printf ("vt\n");
return 0;
}
} else {
printf ("pty\n");
return 2;
}
}
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