#!/bin/bash

FIGLET="$HOME/figlet -f $HOME/standard.flf"

resta () {
	min=$1
	seg=$2

	seg=$(expr $seg - 1)

	if [ "$seg" -eq -1 ]
	then
		seg=59;
		min=$(expr "$min" - 1)
	fi

	ret=$(printf "%2d:%2d" $min $seg)
	ret=$(echo "$ret" | tr " " "0")
	echo "$ret"

}

imprimir () {
	echo -e "\n\n\n\n\n\n\n\n"
	$FIGLET "                     $i"
}

i="$1"

min=$(echo $i | cut -d ":" -f 1)
seg=$(echo $i | cut -d ":" -f 2)


while [ "$min" -ne "-1" ]
do

	clear
	imprimir "$i"
	sleep 1
	i=$(resta $min $seg)
	min=$(echo $i | cut -d ":" -f 1)
	seg=$(echo $i | cut -d ":" -f 2)
done

read