There's so many code examples that hint at running your code on the terminal prompt, and that hint is a
$ character at the start.
I've written about how I run my blog in a way that this character isn't actually part of the content (it's an non-selectable CSS pseudo element), but this doesn't help when taking code from other sites.
Mikkel's tiny, tiny script is so elegant I pinched it right away. The script, called
$ consists entirely of:
Now whenever I paste a line starting with
$ ... the command runs as I would intend. Perfect!