Is there any software for Linux that would take a screenshot of the selected area of ​​the screen when you press any button on the keyboard?

Question

linux

I want to make a gif file of a set of code.
I know that you can simply record the selected area, then split it into frames and remove the excess. But I would like to speed up this process. We need frames only with new characters.

Answer 1

ImageMagick import script on any click. They can also (with a script) be cut and folded where necessary with the same magic.

Answer 2

ubunrtu - built into
OS printscreen
control + print
shift + control + screen