Launchers are just desktop icons that when double clicked, will execute a given command. They are so useful in a frenzied desktop environment.
In gnome, you can create one by just clicking the right button of your mouse on a free area on the desktop and then selecting “Create a new Launcher”.
However, this practicity often causes a sense of boredom in some uncommon human beings.

Luckily for them, a launcher is just a common file with some simple characteristics and thus it can be made using any familiar unix editor.