godot

TLDR

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]