# Launching Applications

You can launch applications from your CLI program with `typer.launch()`.

It will launch the appropriate application depending on the URL or file type you pass it:

{ docs_src/launch/tutorial001.py hl[6] }

Check it:

    $ python main.py

    Opening Typer docs

    // Opens browser with Typer's docs

## Locating a file

You can also make the operating system open the file browser indicating where a file is located with `locate=True`:

{ docs_src/launch/tutorial002.py hl[17] }

/// tip

The rest of the code in this example is just making sure the app directory exists and creating the config file.

But the most important part is the `typer.launch(config_file_str, locate=True)` with the argument `locate=True`.

///

Check it:

    $ python main.py

    Opening config directory

    // Opens a file browser indicating where the config file is located

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