Ask HN: How to type euro symbol from keyword?

On most keyboard (linux and windows) you can just type [Alt Gr] + [4] (which is also [$]).

Edit: only actually tested on English/British keyboard layouts, though I assume we've got legislation in place to remove this mapping when we leave the EU.

Do I need to press and hold for some time or need to double tap?

On mine, I press and hold the alt-gr key and tap the number 4 (on the top row, not on the number pad).

Other people say it's alt-gr + e, so that'd be holding the alt-gr key and tapping E

I use US International layout, and Alt Gr (right Alt) + 5 (or maybe 6) works.

On a german keyboard it's [alt]+[e]

AltGr-e :)

Depends on your keyboard, of course.

alt shift 2