import argparse
import os
from time import sleep

def main():
   args = get_args()
   buckets = {}
   with open(args.p, "r") as f:
      f.seek(0, os.SEEK_END)
      while True:
         line = f.readline().strip()
         key = line.strip("/")
         if not line:
            sleep(0.25)
            continue
         if not key in buckets:
            buckets[key] = False
         buckets[key] = line[0] != "/"
         print(sorted([int(i) for i in buckets if buckets[i]]))

def get_args():
   ap = argparse.ArgumentParser()
   ap.add_argument("-p", type=str, help="path to write out to", default="/tmp/cbappend.both.txt")
   return ap.parse_args()

if __name__ == "__main__":
   main()