gistfile1.txt

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <sys/types.h>
#include <sys/dir.h>

int
main(int argc, char** argv)
{
  if (argc < 2) {
    fprintf(stderr, "%s DIRNAME\n", argv[0]);
    exit(EXIT_FAILURE);
  }

  DIR* dir = opendir(argv[1]);
  if (dir == NULL) {
    perror("opendir");
    exit(EXIT_FAILURE);
  }

  if (chdir(argv[1]) < 0) {
    perror("chdir");
    exit(EXIT_FAILURE);
  }

  struct dirent* dp = NULL;
  while ((dp = readdir(dir)) != NULL) {
    if ((dp->d_namlen == 1 && strncmp(".", dp->d_name, 1) == 0) ||
        (dp->d_namlen == 2 && strncmp("..", dp->d_name, 2) == 0))
      continue;
    printf("%d %s\n", dp->d_fileno, dp->d_name);
    if (unlink(dp->d_name) < 0) {
      perror("unlink");
      closedir(dir);
      exit(EXIT_FAILURE);
    }
  }

  closedir(dir);

  return EXIT_SUCCESS;
}