Difference between sh, dash, bash etc?

Question

bash

This is the choice VestaCP offers. Question: how do they differ?

Answer 1

/bin/sh - This is Bourne Shell version 1.0
/bin/bash - This is Bourne Shell version 2.0
Accordingly, everything written for /bin/sh works in bash. They differ in that they read different files at startup. /bin/sh - reads .profile. /bin/bash - reads .bash_profile.
If the account is for yourself (or in general for the user) - put bash. If for the machine - / bin / sh, it's easier