Linux: Send files in e-mail from console

So I wanted to send some files, but my mailx package did not have support for the famous -a parameter.

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#!/bin/bash   function create_attachment_block() {         echo -ne "--$BOUNDARY\r\nContent-Transfer-Encoding: base64\r\n"         echo -ne "Content-Type: $(file -bi "$1"); name=\"$1\"\r\n"         echo -ne "Content-Disposition: attachment; filename=\"$1\"\r\n\r\n$(base64 -w 0 "$1")\r\n\r\n" }   if [ $# -lt 2 ]; then         echo No files specified...         exit 1; fi   BOUNDARY="==combine-autogun==_$(date +%Y%m%d%H%M%S)_$$_==" BODY=""   for a in "$@" do         if [ -s "$a" -a -f "$a" -a -r "$a" ]; then                 BODY="$BODY""`create_attachment_block "$a"`"         fi done   /usr/sbin/sendmail -oi -t << COMPLEX_MAIL To: $1 Subject: Please see files attached MIME-Version: 1.0 User-Agent: $0 Content-Type: multipart/mixed; boundary="$BOUNDARY"   $BODY --${BOUNDARY}-- COMPLEX_MAIL