This means that the system should look for programs in the directories:

* `/usr/local/bin`
* `/usr/bin`
* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | Windows

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32
```

This means that the system should look for programs in the directories:

* `C:\Program Files\Python312\Scripts`

Isso significa que o sistema deve procurar programas nos diretórios:

* `/usr/local/bin`
* `/usr/bin`
* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | Windows

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32
```

Isso significa que o sistema deve procurar programas nos diretórios:

* `C:\Program Files\Python312\Scripts`

También puedes crear una variable de entorno solo para una **invocación específica de un programa**, que está disponible solo para ese programa, y solo durante su duración.

Para hacer eso, créala justo antes del programa en sí, en la misma línea:

<div class="termy">

```console
// Crea una env var MY_NAME en línea para esta llamada del programa
$ MY_NAME="Wade Wilson" python main.py

// Ahora puede leer la variable de entorno

    /**
     * @throws Exception
     */
    public void testEncode() throws Exception {
        assertEquals("Program+Files", URLUtil.encode("Program Files", "UTF-8"));
    }

    /**
     * @throws Exception
     */
    public void testDecode() throws Exception {
        assertEquals("Program Files", URLUtil.decode("Program+Files", "UTF-8"));
    }

    /**
     * @throws Exception
     */

* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | Windows

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32
```

Dit betekent dat het systeem naar programma's zoekt in de mappen:

* `C:\Program Files\Python312\Scripts`
* `C:\Program Files\Python312`
* `C:\Windows\System32`

////

* `/usr/bin`
* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | ویندوز

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32
```

یعنی سیستم باید دنبال برنامه‌ها توی این پوشه‌ها بگرده:

* `C:\Program Files\Python312\Scripts`
* `C:\Program Files\Python312`
* `C:\Windows\System32`

////

And then, there would be another program (in some cases it's another program, in some cases it could be the same TLS Termination Proxy) that would talk to Let's Encrypt, and renew the certificate(s).

<img src="/img/deployment/https/https.drawio.svg">

The **TLS certificates** are **associated with a domain name**, not with an IP address.

## Server Machine and Server Program { #server-machine-and-server-program }

There's a small detail about names to keep in mind. 💡

The word "**server**" is commonly used to refer to both the remote/cloud computer (the physical or virtual machine) and also the program that is running on that machine (e.g. Uvicorn).

---

Then the next concepts to consider are all about the program running your actual API (e.g. Uvicorn).

## Program and Process { #program-and-process }

We will talk a lot about the running "**process**", so it's useful to have clarity about what it means, and what's the difference with the word "**program**".

### What is a Program { #what-is-a-program }

The word **program** is commonly used to describe many things:

* `/bin`
* `/usr/sbin`
* `/sbin`

////

//// tab | উইন্ডোজ

```plaintext
C:\Program Files\Python312\Scripts;C:\Program Files\Python312;C:\Windows\System32
```

তারমানে হলো সিস্টেম প্রোগ্রামগুলোকে নিচের ডিরেক্টরিগুলোতে খুঁজবেঃ

* `C:\Program Files\Python312\Scripts`
* `C:\Program Files\Python312`
* `C:\Windows\System32`

////