#!/bin/bash

if [[ "$1" = -h || "$1" = —help ]]
then
	echo "Usage: clearPath.sh [path]"
	echo.
	echo The script displays the directories names with executable files.
	echo If [path] is empty script displays the directories names PATH
	exit 0
fi

if [ -z "$1" ]
then
	currentPath="$PATH"
else
	currentPath="$1"
fi

LFS=':'
result=""
echo $currentPath
echo ""
for folder in $currentPath
do
	echo "$folder"
	if  [[ ! -d "$folder" || "$result": == *:$(readlink -f "$folder"):* ]]
	then

		continue
	fi
	firstChar=$(echo "$folder" | cut -c 1)
	if [[ "$firstChar" == "." || "$firstChar" == "~" ]]
	then
		continue
	fi
	for file in $folder
	do
		if [[ -x "$file" ]]
		then
			result=$result:$(readlink -f "$folder")
			break
		fi
	done
done
IFS=' '
echo "${result#:}"