List directory with up to 8 million files. Script taken from https://coderwall.com/p/h6rifq Download the file, compile it: gcc listdir.c -o listdir And use it like this: ./listdir [target dir] > target-ls.txt

gistfile1.txt

#define _GNU_SOURCE
#include <dirent.h>   
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/syscall.h>

#define handle_error(msg) \
  do { perror(msg); exit(EXIT_FAILURE); } while (0)

struct linux_dirent {
  long           d_ino;
  off_t          d_off;
  unsigned short d_reclen;
  char           d_name[];
};

#define BUF_SIZE 1024*1024*5

int
       main(int argc, char *argv[])
{
  int fd, nread;
  char buf[BUF_SIZE];
  struct linux_dirent *d;
  int bpos;
  char d_type;

  fd = open(argc > 1 ? argv[1] : ".", O_RDONLY | O_DIRECTORY);
  if (fd == -1)
    handle_error("open");

  for ( ; ; ) {
    nread = syscall(SYS_getdents, fd, buf, BUF_SIZE);
    if (nread == -1)
      handle_error("getdents");

    if (nread == 0)
      break;
   
    for (bpos = 0; bpos < nread;) {
    
      d = (struct linux_dirent *) (buf + bpos);
      if(d->d_ino) printf("%s\n", (char *) d->d_name);
      bpos += d->d_reclen;
    }
    
  }

  exit(EXIT_SUCCESS);
}