Problem Statement

The task is to programmatically obtain the name used to invoke the program. (For example determine whether the user ran "python hello.py", or "python hellocaller.py", a program importing the code from "hello.py".) Sometimes a multiline shebang is necessary in order to provide the script name to a language's internal ARGV. See also Command-line arguments Examples from GitHub.

Let's start with the solution:

#!/usr/bin/env jsish
/* Program name, in Jsish */
puts('Executable:', Info.executable());
puts('Argv0     :', Info.argv0());