#!/bin/sh

# This script is used to run a command. If the command failed,
# an email is sent to the address specified by MAILTO.

# Begin of user modifiable variables
MAILFROM="${USER}"
MAILTO="root"
# End of User modifiable variables

SENDMAIL="/usr/sbin/sendmail -t -r ${MAILFROM}"
MAILFILE="/tmp/mail-if-fail-output$$"
LOGFILE="/tmp/mail-if-fail-log$$"

# Running the specified command
${*} 1> ${LOGFILE} 2>&1

ERROR_CODE=${?}

if [ ${ERROR_CODE} -ne "0" ]; then
    echo "From: ${MAILFROM}" > ${MAILFILE}
    echo "To: ${MAILTO}" >> ${MAILFILE}
    echo "Subject: \"${1}\" FAILED (${ERROR_CODE})" >> ${MAILFILE}
    echo "Content-type: text/plain" >> ${MAILFILE}
    echo "Output of command ${*}:" >> ${MAILFILE}
    echo >> ${MAILFILE}
    cat ${LOGFILE} >> ${MAILFILE}
    cat ${MAILFILE} | ${SENDMAIL} || exit 1
    rm -f ${MAILFILE}
fi

rm -f ${LOGFILE}

exit ${ERROR_CODE}