#!/usr/bin/env python3
"""
Find the largest files in a directory tree.
Usage: python3 largest_files.py [directory] [count]
"""
import os
import sys
from pathlib import Path

def find_largest_files(directory=".", count=10):
    """Find the N largest files in a directory tree."""
    largest = []
    directory = Path(directory)
    
    for path in directory.rglob("*"):
        if path.is_file():
            try:
                size = path.stat().st_size
                largest.append((path, size))
            except (OSError, PermissionError):
                continue
    
    largest.sort(key=lambda x: x[1], reverse=True)
    return largest[:count]

if __name__ == "__main__":
    dir_arg = sys.argv[1] if len(sys.argv) > 1 else "."
    count_arg = int(sys.argv[2]) if len(sys.argv) > 2 else 10
    
    results = find_largest_files(dir_arg, count_arg)
    print(f"Top {len(results)} largest files in {dir_arg}:")
    print("-" * 60)
    for path, size in results:
        print(f"{size:>12,} bytes  {path}")