#include <stdio.h>
#include <unistd.h>
#include <netdb.h>
#include <limits.h>

int
main(int argc, char **argv)
{
  char hostname[PATH_MAX];

  hostname[sizeof(hostname) - 1] = '\0';
  if (gethostname(hostname, sizeof(hostname) - 1) == 0) {
    printf("gethostname done\n");
    struct hostent *h = gethostbyname(hostname);
    printf("gethostbyname done\n");
    if (h)
      printf("h: '%s'\n", h->h_name);
    else
      printf("!h: '%s'\n", hostname);
  } else {
    printf("gethostname error\n");
  }

  return 0;
}