How is sh install.sh different from bash install.sh?

Question

bash

Hello.
Actually the question is, on github in different repositories, installation via sh or bash.
Interesting question, what is the difference?
What do the entries at the top of the bash file (#!/bin/bash, #!/usr/bin/env bash, etc.) say?

Answer 1

The fact that these are 2 different shells (interpreters) that are relatively compatible (there are a lot of things in bash that sh cannot do - the so-called "bashisms").