bash script that describes typical filesystem objects—lists directories, describes files, and resolves links on the way

?

#!/bin/bash

script_canonical_name='?'

file="${1:-$(pwd)}"
if [[ -h "$file" ]]
then
	echo "$script_canonical_name: is a link to $(readlink "$file")"
	file=$(realpath "$file")
fi

if [[ -d "$file" ]]
then
	ls -p "$file"
else
	file "$file"
fi