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以下のようなスクリプトを書いてみました。

備忘録として、アップしておきます。

#!/usr/local/bin/bash

# DEBUG=1

PrintUsage(){

cat<

Usage:

  $0 FromAddress ToAdress Subject Attachement

  ---

     FromAddress is This mail Sender.

     ToAdress    is Sendto this Mail.

     Subject     is Mail Subject

     Attachement is Atachement file name.

EOM

}

if [ $# -ne 4 ];then

   if [ ${DEBUG} ];then

      echo "!! DEBUG:\$# is $#" >&2

   fi

   PrintUsage

   exit 1

fi

if [ ${DEBUG} ];then

  echo "\${1} is ${1}"

  echo "\${2} is ${2}"

  echo "\${3} is ${3}"

  echo "\${4} is ${4}"

fi

## Init section

FADRES="${1}"

TADRES="${2}"

SUBJECT="${3}"

BOUNDARY=`date "+%Y%m%d%H%M%N"`

ARCVNAME="${4}"

FILENAME=`echo "${4}" | sed -e "s/.*\/\(.*$\)/\1/"`

CONTTYPE=`file --mime ${4} | cut -d' ' -f2`

MAIL_TMP=".MIME_MAIL.tmp"

if [ ${DEBUG} ];then

  echo "\${FADRES}   is ${FADRES}"

  echo "\${TADRES}   is ${TADRES}"

  echo "\${SUBJECT}  is ${SUBJECT}"

  echo "\${BOUNDARY} is ${BOUNDARY}"

  echo "\${CONTTYPE} is ${CONTTYPE}"

  echo "\${FILENAME} is ${FILENAME}"

  echo "\${MAIL_TMP} is ${MAIL_TMP}"

  exit 99

fi

PrintScale(){

cat<

0--------1---------2---------3---------4---------5---------6---------7---------8

12345678901234567890123456789012345678901234567890123456789012345678901234567890

EOSCALE

}

PrintMailHeader(){

cat<

From: $FADRES

To: $TADRES

Subject: $SUBJECT

MIME-Version: 1.0

Content-type: multipart/mixed; boundary="----${BOUNDARY}"

Content-Transfer-Encoding: 7bit

This is a multi-part message in MIME format.

EOHEAD

}

PrintMailBody(){

cat<

------${BOUNDARY}

Content-type: text/plain; charset=us-ascii

Content-Transfer-Encoding: 7bit

Generated by ${0} on `date "+%Y/%m/%d %H:%M:%S"`

EOBODY

}

PrintAttachFile(){

cat<

------${BOUNDARY}

Content-type: ${CONTTYPE}

 name=${FILENAME}

Content-Transfer-Encoding: base64

Content-Disposition : attachment;

 filename=${FILENAME}

`b64encode ${ARCVNAME} ${FILENAME}`

------${BOUNDARY}--

EOA

}

# ==================================================================

## generate MIME encoded mail

touch ${MAIL_TMP}

PrintMailHeader >> ${MAIL_TMP}

## Insert MAIL_BODY (if you need)

PrintMailBody   >> ${MAIL_TMP}

PrintScale      >> ${MAIL_TMP}

## Attach file

PrintAttachFile >> ${MAIL_TMP}

## Send E-Mail

# /usr/sbin/sendmail -i $TADRES < ${MAIL_TMP}

if [ ${DEBUG} ];then

   cat ${MAIL_TMP}

   exit 9

fi

sendmail -t < ${MAIL_TMP}

## Delete TEMP file

rm -f ${MAIL_TMP}

exit 0