Check if password is powned by https://haveibeenpwned.com

check-password.sh

#!/bin/bash
# check if password was insert
if [ $# -eq 0 ]
        then
        echo "no password was insert, syntax is ./check-password.sh password"
        else
        #create sha1sum of password for transfering to online check
        sha1pass=`echo -n "$1" | sha1sum  | cut -d ' ' -f1`
        #run test and get a result from api
        result=`curl -s https://api.pwnedpasswords.com/pwnedpassword/$sha1pass`
        # if password was found we will get a number of entries only if result is empty the password was not found, so we check if result is empty
        if [ -z "$result" ]
                then
                echo "Your lucky your password was not found in the Database!"
                else
                echo "Your password was found: $result times."
        fi
fi