# `Excessibility.SystemBehaviour`
[🔗](https://github.com/lessthanseventy/excessibility/blob/v0.18.1/lib/system_behavior.ex#L1)

Behaviour for system-level operations.

This behaviour defines the interface for opening files in the system browser,
used during interactive diff resolution.

## Mocking

Implement this behaviour to mock system operations in tests:

    Mox.defmock(Excessibility.SystemMock, for: Excessibility.SystemBehaviour)
    Application.put_env(:excessibility, :system_mod, Excessibility.SystemMock)

See `Excessibility.System` for the default implementation.

# `open_with_system_cmd`

```elixir
@callback open_with_system_cmd(String.t()) :: any()
```

Opens a file path in the system's default browser.

## Parameters

- `path` - The file path to open

## Returns

The result of the system command (typically ignored).

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*Consult [api-reference.md](api-reference.md) for complete listing*