#!/bin/bash

read -p "enter a password : " password

if [[ -z $password ]] ; then
    echo "you must enter a password"
    exit;
fi

if [[ ${#password} -ge 12 ]] && [[ $password =~ [a-zA-Z] ]] && [[ $password =~ [0-9] ]] && [[ $password =~ [^a-zA-Z0-9] ]]; then
    echo "Strong!!"
else
    echo "Weak"
fi