gistfile1.txt

function decode {
	target=0
	len=${#1}
	outstr=""
	while [ $target -lt $len ]
	do
		if [ ${1:$target:1} != '%' ]; then
			outstr=$outstr${1:$target:1}
			target=$(($target + 1))
		elif [ ${1:$target:2} == '%f' ]; then
			outstr=$outstr"/"
			target=$(($target + 2))
		else
			outstr=$outstr${1:$target+1:1}
			target=$(($target + 2))
		fi	
	done
	echo $outstr
}