$host.ui.RawUI.WindowTitle = "My Useful Script is Running " + $MyInvocation.MyCommand.Path;

Source:
https://www.tutorialspoint.com/how-to-get-the-path-of-the-currently-executing-script-in-powershell

If you need a list of full paths to the files in the current directory use the readlink command:

readlink -r *

find . -type f -exec stat --format '%Y :%y %n' "{}" \; | sort -nr | cut -d: -f2- | head

Adapted from https://stackoverflow.com/questions/5566310/how-to-recursively-find-and-list-the-latest-modified-files-in-a-directory-with-s