http://superuser.com/questions/503559

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>

int main(int argc, char *argv[]) {
    struct stat sb;
    int count;
    struct DIR *d;

    if (argc != 2) {
        fprintf(stderr, "Usage%s <pathname>\n", argv[0]);
        exit(EXIT_FAILURE);
    }

    if (stat(argv[1], &sb) == -1) {
        perror("stat");
        exit(EXIT_FAILURE);
    }

    printf("File type               ");

    switch (sb.st_mode & S_IFMT) {
    case S_IFDIR:       printf("directory (%s)\n", argv[1]);
        if ((d = opendir(argv[1])) != NULL) {
                for (count = 0; readdir(d) != NULL; count++);
                closedir(d);
        }
        printf("Files in directory        %ld\n", (long) count - 2);        break;
    case S_IFBLK:  printf("block device\n");            break;
    case S_IFCHR:  printf("character device\n");        break;
    case S_IFIFO:  printf("FIFO/pipe\n");               break;
    case S_IFLNK:  printf("symlink\n");                 break;
    case S_IFREG:  printf("regular file\n");            break;
    case S_IFSOCK: printf("socket\n");                  break;
    default:       printf("unknown?\n");                break;
    }

    printf("\n");
    printf("I-node number             %ld\n", (long) sb.st_ino);
    printf("Mode                      %lo (octal)\n", (unsigned long) sb.st_mode);
    printf("Link count                %ld\n", (long) sb.st_nlink);
    printf("Ownership                 UID=%ld   GID=%ld\n", (long) sb.st_uid, (long) sb.st_gid);
    printf("Preferred I/O block size  %ld bytes\n", (long) sb.st_blksize);
    printf("File size                 %lld bytes\n", (long long) sb.st_size);
    printf("Blocks allocated          %lld\n", (long long) sb.st_blocks);
    printf("Last status change        %s", ctime(&sb.st_ctime));
    printf("Last file access          %s", ctime(&sb.st_atime));
    printf("Last file modification    %s", ctime(&sb.st_mtime));

    exit(EXIT_SUCCESS);
}