#! /usr/bin/env python3

"""
A portable `cp` command that works on both Windows and Unix-like systems.
"""

import os
import sys
import shutil

def main():
    if len(sys.argv) != 3:
        print("Usage: {} SOURCE DEST".format(sys.argv[0]))
        sys.exit(1)

    src = sys.argv[1]
    dst = sys.argv[2]

    if os.path.isdir(src):
        shutil.copytree(src, dst)
    else:
        shutil.copy2(src, dst)

if __name__ == "__main__":
    main()