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`

    /**
     * @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
     */

* `/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`

////

 * @author koichik
 */
public class ZipFileUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToJarFilePath() throws Exception {
        final URL url = new URL(null, "zip:/Program Files/foo.zip!/", new URLStreamHandler() {
            @Override
            protected void parseURL(final URL u, final String spec, final int start, final int limit) {

A `requirements.txt` with some packages could look like:

```requirements.txt
fastapi[standard]==0.113.0
pydantic==2.8.0
```

///

## Run Your Program { #run-your-program }

After you activated the virtual environment, you can run your program, and it will use the Python inside of your virtual environment with the packages you installed there.

<div class="termy">

```console
$ python main.py

    /**
     * @throws Exception
     */
    public void testToJarFilePath() throws Exception {
        final File f = new File("/Program Files/foo.jar");
        final URL url = new URL("jar:" + f.toURI().toURL() + "!/");
        final String root = new File("/").getCanonicalPath();
        assertEquals(root + "Program Files" + File.separator + "foo.jar", JarFileUtil.toJarFilePath(url));
    }

    /**
     * @throws Exception
     */