How can I find the location of the tcsh shell script I'm executing?

Question

Say I put an executable tcsh file in /path/to/my_script.csh

and my current directory is anywhere, for example I'm in /path

So I type to/my_script.csh

I want to have a line in my_script.csh that will return "/path/to/my_script.csh" - like ruby's

__FILE__

Answer 1

#!/bin/tcsh
echo "I am $0."