shell - Centos 6 /usr/sbin/sendmail - how to send email with subject? -

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trying send email shell (centos 6) using 1 line command, subject empty

echo 'body' | /usr/sbin/sendmail x@gmail.com subject:"test send mail"

spent hours trying googling , find answer how send email using "/usr/sbin/sendmail" subject, no matter try, subject empty.

(echo "subject: test"; echo; echo 'body')|/usr/sbin/sendmail -i x@gmail.com

or cleaner script version

#!/bin/sh /usr/sbin/sendmail -i x@gmail.com <<end subject: test  body end

warning: non us-ascii characters require special encoding in headers , custom headers when included in body.


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