Using openconnect for access to VPN server via script

vpn.sh

#!/bin/bash

username="user@hostname"
password="your-Complex-password"
url="Your-URL"
pidfile="/tmp/openconnect-pid"


case "$1" in
start)
    echo "$password" | openconnect -b --pid-file=$pidfile --user=$username $url &
    ;;
stop)
   if [ -e "$pidfile" ]
   then
      cat $pidfile  | xargs kill -2
   else
      echo "Are you executed before ./vpn.sh start?"
    fi
    exit 1
    ;;
*)
    echo "$0 <start|stop>"
    exit 1
esac