echo $SHELL: unexpected result

Question

I am facing a problem related to the shell change, when I change the shell from bash to csh and type the comand echo $SHELL, I expect the shell to print:

/bin/csh

But instead it prints:

/bin/bash

What is the reason for that? How do I print the path to the currently running shell instead?

Answer 1

To view your current shell use:

echo $0

$SHELL prints the default shell.