: u-vacation
# A user delivery file for when you're on vacation.
#
# The ALREADY file remembers who you've already mailed vacation messages to.
# The BEBACK string is the date you will return.

ALREADY=vacation.list
BEBACK="on July 4, 1776"

echo "$1"               # Keep the mail!

if grep '^'${SENDER}'$' $ALREADY >/dev/null 2>/dev/null
then
    exit 0              # We already notified this person; reject
fi

case $SENDER in
*uucp)  exit 0 ;;       # Not a human; reject
*daemon) exit 0 ;;      # Not a human; reject
*DAEMON) exit 0 ;;      # Not a human; reject
*!*)    ;;
*@*)    ;;
## *)      exit 0 ;;       # Local user; reject (maybe)
esac

# Remember this person
echo $SENDER >>$ALREADY

# Send the vacation message
SUBJECT=`header -f subject $HEADER`
mail -s "I'm on vacation" $SENDER <<!EOF!
Your message to me on the subject
    "$SUBJECT"
has been delivered.  However, I am on vacation, so I have not yet
read your message.  I will be back $BEBACK.

This is the only such message you will receive.

Thank you.
!EOF!