Script to notify alert@localhost on an SSH login or log out

notify-ssh-login.sh

#!/bin/bash

PATH=/bin:/usr/bin:/usr/sbin
SUBJ="Alert - Remote SSH access from ${PAM_USER}"

if [ -z "$PAM_TYPE" -o "$PAM_TYPE" == "open_session" ]
then

sendmail alert <<END
$(hostname) $(date): LOGIN by ${PAM_USER} from ${PAM_RHOST}
$(who)
END

else

sendmail alert <<END
$(hostname) $(date): LOG OUT by ${PAM_USER} from ${PAM_RHOST}
END

fi