## Переменная окружения `PATH`

Существует **специальная** переменная окружения **`PATH`**, которая используется операционными системами (Linux, macOS, Windows) для поиска программ для запуска.

Значение переменной `PATH` - это длинная строка, состоящая из каталогов, разделенных двоеточием `:` в Linux и macOS, и точкой с запятой `;` в Windows.

Например, переменная окружения `PATH` может выглядеть следующим образом:

### برنامه سطح بالا

ابتدا برنامه اصلی سطح بالا، **FastAPI** و path operations آن را ایجاد کنید:


{* ../../docs_src/sub_applications/tutorial001.py hl[3,6:8] *}

### زیر برنامه

سپس، زیر برنامه خود و path operations آن را ایجاد کنید.

/**
 * The search form for Path Map.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The regular expression pattern field for path mapping.
     */
    public String regex;

    /**
     * The replacement string field for path mapping.
     */
    public String replacement;

		tr := NewReader(&buf)
		h, err := tr.Next()
		if err != ErrInsecurePath {
			t.Errorf("tr.Next for file %q: got err %v, want ErrInsecurePath", path, err)
			continue
		}
		if h.Name != path {
			t.Errorf("tr.Next for file %q: got name %q, want %q", path, h.Name, path)
		}
		// Error should not be sticky.
		h, err = tr.Next()
		if err != nil {
			t.Errorf("tr.Next for file %q: got err %v, want nil", securePath, err)

     */
    protected abstract String getActionRole();

    /**
     * Writes data to the specified file path.
     *
     * @param path the file path to write to
     * @param data the data to write
     */
    protected void write(final String path, final byte[] data) {
        LdiFileUtil.write(path, data);
    }

    /**
     * Gets the servlet context.
     *
     * @return the servlet context

    @Override
    public void setPath(String path) {
        if (path.length() > 0 && path.charAt(0) == '\\') {
            path = path.substring(1);
        }
        // win8.1 returns ACCESS_DENIED if the trailing backslash is included
        if (path.length() > 1 && path.charAt(path.length() - 1) == '\\') {
            path = path.substring(0, path.length() - 1);
        }
        this.name = path;
    }

    /**

        super.setUp();

        Path tempDir = Files.createTempDirectory("smbdata");
        Path publicDir = tempDir.resolve("public");
        Files.createDirectory(publicDir);
        Path usersDir = tempDir.resolve("users");
        Files.createDirectory(usersDir);
        Path testuser1Dir = tempDir.resolve("testuser1");
        Files.createDirectory(testuser1Dir);
        Path testuser2Dir = tempDir.resolve("testuser2");

     * @param server the server data containing security information
     * @param path the UNC path to the shared resource
     * @param service the service type (e.g., "A:" for disk share, "LPT1:" for printer)
     * @param andx the next command in the AndX chain, or null
     */
    public SmbComTreeConnectAndX(final CIFSContext ctx, final ServerData server, final String path, final String service,
            final ServerMessageBlock andx) {

But remember that when you import `Query`, `Path`, `File` and others from `fastapi`, those are actually functions that return special classes.

///

/// tip

To declare File bodies, you need to use `File`, because otherwise the parameters would be interpreted as query parameters or body (JSON) parameters.

///

The files will be uploaded as "form data".

/// tip | 豆知識

使用するすべてのタグにメタデータを追加する必要はありません。

///

### 自作タグの使用

`tags` パラメーターを使用して、それぞれの *path operations* (および `APIRouter`) を異なるタグに割り当てます:

{* ../../docs_src/metadata/tutorial004.py hl[21,26] *}

/// info | 情報

タグのより詳しい説明を知りたい場合は [Path Operation Configuration](path-operation-configuration.md#tags){.internal-link target=_blank} を参照して下さい。

///

### ドキュメントの確認