#!/bin/bash
clear
if [ $# -lt 2 ] || [ $# -gt 4 ]; then

	echo "nieprawidlowa liczba argumentow"

elif [ ${#1} -ne 3 ]; then
	echo "nieodpowiednia dlugosc pierwszego znaku"

elif [ $1 -gt 777 ] || [ $1 -lt 0 ]; then
	echo "nieodpowiednia cyfra"

elif [[ $2 != "f" ]] && [[ $2 != "d" ]] && [[ $2 != "l" ]]; then
	echo "nieprawidlowa druga litera"
elif [[ $3 != "f" ]] && [[ $3 != "d" ]] && [[ $3 != "l" ]] && [[ $3 != "" ]]; then
	echo "nieprawidlowa trzecia litera"
elif [[ $4 != "f" ]] && [[ $4 != "d" ]] && [[ $4 != "l" ]] && [[ $4 != "" ]]; then
	echo "nieprawidlowa czwarta litera"
else
	echo "PRZED"; ls -l
	echo "PO"

case "$2" in
	"f") find -type f -exec chmod -R $1 {} \;;;
	"d") find -type d -exec chmod -R $1 {} \;;;
	"l") find -type l -exec chmod -R $1 {} \;;;
esac

if [ $# -gt 2 ]; then
case "$3" in
	"f") find -type f -exec chmod -R $1 {} \;;;
	"d") find -type d -exec chmod -R $1 {} \;;;
	"l") find -type l -exec chmod -R $1 {} \;;;
esac
fi

if [ $# -gt 3 ]; then
case "$4" in
	"f") find -type f -exec chmod -R $1 {} \;;;
	"d") find -type d -exec chmod -R $1 {} \;;;
	"l") find -type l -exec chmod -R $1 {} \;;;
esac
fi
	ls -l
fi