# godot > An open source 2D and 3D game engine. > More information: . - Run a project if the current directory contains a `project.godot` file, otherwise open the project manager: `godot` - Edit a project (the current directory must contain a `project.godot` file): `godot -e` - Open the project manager even if the current directory contains a `project.godot` file: `godot -p` - Export a project for a given export preset (the preset must be defined in the project): `godot --export {{preset}} {{output_path}}` - Execute a standalone GDScript file (the script must inherit from `SceneTree` or `MainLoop`): `godot -s {{script.gd}}`