mail -s 'subject' -c 'cc-address' -b 'bcc-address' 'to-address'
Press CTRL+D you are finished writing the mail.
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===== Example =====
# mail the text that was piped to mail
echo "mail text" | mail john@example.com -s "subject text"
# mail the file content
cat list.txt | mail john@example.com -s "sample subject"