Possible Duplicate:
How to test what shell I am using in a terminal?
An echo $SHELL will only display the value of the SHELL variable which would indicate the default shell on the system.
But I might not be always using the default shell on my system:
$ bash
$ echo $SHELL
/bin/bash
$ csh
% echo $SHELL
/bin/bash
%
How can I easily figure out what shell I am using?
