#!/bin/bash

ME=$0

JUSTME=${ME##*/}

if [[ $ME != $JUSTME ]]
then
        echo "I am $ME"
else
        for P in ${PATH/:/ /}
        do
                if [[ -x $P/$JUSTME ]]
                then
                        echo "I am $P/$JUSTME"
                        break
                fi
        done
fi