open gmail if there was no new email at last check and now there is ( i execute it in a cron every minute )

gistfile1.sh

#! /bin/bash

num_mail=$(wget -q -O - --auth-no-challenge --user=email@gmail.com --password=my_password 'https://mail.google.com/mail/feed/atom' | awk 'gsub(/<\/?fullcount>/, "")')

export DISPLAY=:0

if [ -e "/tmp/gmail_opened" ]
then
  if [[ "$num_mail" == "0" ]]
  then
    rm "/tmp/gmail_opened"
  fi
else
  if [[ "$num_mail" != "0" && "$num_mail" != "" ]]
  then
     touch "/tmp/gmail_opened"
     chromium "https://mail.google.com/mail/u/0/?ui=html#inbox"
  fi
fi