def METHOD_NAME(num, client, dir):
    for i in range(num):
        ran = "".join(
            random.choice(string.ascii_lowercase + string.digits)
            for _ in list(range(5))
        )
        client.exec_command(sudo=True, cmd=f"mkdir {dir}_{ran}_{i}")
        client.exec_command(
            sudo=True, cmd=f"dd if=/dev/urandom of={ran}__{i} bs=1K count=1"
        )