Flash Terminal Color, Blink Terminal Colors

flash

#!/bin/bash
#
# Author: Amado Martinez - AmadoMartinez.mx
# License: MIT License
# Date: 2016-05-10
#
# Keywords: Flash Terminal Color Shell Color Blink Alert
# 

if [ $# -lt 2 ] ; then
    head -n 10 $0 | grep ^#
    echo -e "Usage:\n\t$0 [speed] [times] [color1] [color2]\nExample:\n\t$0 0.5 3 red white\n"
    exit
fi

if [ $# -lt 4 ] ; then
    fore=black
    back=white
else
    fore=$3
    back=$4
fi

function flip(){
	setterm -term linux -back $1 -fore $2 -clear all
}


for i in $(seq 1 $2); do
    flip $back $fore
    sleep $1
    flip $fore $back
    sleep $1
done

setterm -default -clear all