#!/bin/bash

help(){
	echo "This script displays the purified PATH"
	exit
}
solve(){
	IFS=:
	for directory in $path
	do
		if [ -d "$directory" ]
		then
			for file in $directory/*
			do
				if [ -x "$file" ]
				then
					cleanpath="$cleanpath"":""$directory"
					break
				fi
			done
		fi
	done

	cleanpath=${cleanpath#:}
	echo "$cleanpath"
}

if [[ $1 = "--help" || $1 = "-h" ]]; then help; fi
if [[ -n $1 ]]; then
	path=$1
	solve
else
	path=$PATH
	solve
fi