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#!/bin/bash
# Read the entire email into a variable
EMAIL=$(cat)
# Extract the sender's email address
SENDER=$(echo "$EMAIL" | maddr -a -h from -)
# Extract the Message-ID of the original email
MESSAGE_ID=$(echo "$EMAIL" | mhdr -h message-id -)
# Extract the original Subject and prefix it with "Re: " if necessary
ORIGINAL_SUBJECT=$(echo "$EMAIL" | mhdr -h subject -)
# Construct the reply subject
REPLY_SUBJECT="Re: $ORIGINAL_SUBJECT"
# Extract the To address
TO_ADDRESS=$(echo "$EMAIL" | maddr -a -h to -)
# Generate the fortune output
if [[ "$TO_ADDRESS" =~ "fortune+cowsay" ]]; then
FORTUNE_OUTPUT=$(/usr/games/fortune | /usr/games/cowsay)
else
FORTUNE_OUTPUT=$(/usr/games/fortune)
fi
# Send a reply with the proper headers
(
echo "Subject: $REPLY_SUBJECT"
echo "From: Fortunes by Python Discord <[email protected]>"
echo "To: $SENDER"
echo "In-Reply-To: $MESSAGE_ID"
echo "References: $MESSAGE_ID"
echo
echo "Here's your fortune:"
echo
echo "$FORTUNE_OUTPUT"
) | /usr/sbin/sendmail -t
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