Why do emails sent via cron come as attachments?

Question

linux

Here's a script:

#!/bin/bash
echo "$(df -h) \n $(tail /var/log/php.mail.log) \n $(exim -bpc)" | mail -s "at02.ru server" [email protected]

Lies in the root folder.
Such text in /etc/crontab

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
*/60   *  *  *  * root /root/mail-about-space.sh

For some reason, emails sent via cron come as attachments.

If you run the file itself directly - the letter comes as it should in the text of the letter.

The system is like this:

uname -a
Linux at02.ru 2.6.32-042stab102.9 #1 SMP Fri Dec 19 20:34:40 MSK 2014 i686 i686 i386 GNU/Linux

How to make letters come in text, not a file?

Answer 1

And you look at them through "show original". Surely when the script is run from cron you receive Russian letters or something else non-ASCII, so mail sets them
Content-Type: application/octet-stream
Content-Transfer-Encoding: 8bit
What to do? -- set the language in the default environment, or explicitly do some kind of export LANG=C in the process of running the script.