#!/bin/bash

# if stdin is coming from a pipe, run less
if [[ ! -t 0 ]]; then
   less -FX
# if there is only one arg and it is not a directory, less it
elif [[ -z "$2" && ! -d "$1" ]]; then
   less -FX "$1"
# otherwise, run dir
else
    ls -lhAF --color=auto "$@"
fi