Linux - New SSH login notification by email

gistfile1.txt

#!/bin/sh

# Script Location
# /usr/local/bin/sshd-login-notification.sh
# Make root owner, 700, +x

# Add the following line to: /etc/pam.d/sshd
# session optional pam_exec.so /usr/local/bin/sshd-login-notification.sh

# Your Email Information: Recipient (To:), Subject and Body
RECIPIENT="<COMPLETE>"
SENDER="<COMPLETE>"
SUBJECT="`hostname` ALERT | New SSH login detected"

BODY="
A SSH login was successful, so here are some information for security:
        User:        $PAM_USER
        User IP Host: $PAM_RHOST
        Service:     $PAM_SERVICE
        TTY:         $PAM_TTY
        Date:        `date`
        Server:      `hostname`
"

if [ ${PAM_TYPE} = "open_session" ]; then
        echo "To:${RECIPIENT}
Subject:${SUBJECT}
From:${SENDER}
${BODY}" | /usr/sbin/sendmail ${RECIPIENT}
fi

exit 0