How to get shell to self-detect using zsh or bash

Question

I\'ve a question on how to tell which shell the user is using. Suppose a script that if the user is using zsh, then put PATH to his .zshrc and if using bash sho

Answer 1

Myself having a similar problem, settled for:

_shell="$(ps -p $$ --no-headers -o comm=)"                                                                                                       
if [[ $_shell == "zsh" ]]; then                                                                                                                  
    read -q -s "?Do it?: "                                                                                                                    
fi                                                                                                                                               
elif [[ $_shell == "bash" || $_shell == "sh" ]]; then                                                                                              
    read -n 1 -s -p "Do it [y/n] "                                                                                                            
fi