Operate on the user’s mailbox. To send an email the message body is built from
stdin. More information: https://manned.org/mail.
mail
<Enter>. Input message text (can be multiline). Press <Ctrl d> to complete the message text:mail --subject "{{subject line}}" {{to_user@example.com}} --cc "{{cc_email_address}}"
mail --subject "{{$HOSTNAME filename.txt}}" {{to_user@example.com}} < {{path/to/filename.txt}}
tar.gz file as an attachment:tar cvzf - {{path/to/directory1 path/to/directory2}} | uuencode {{data.tar.gz}} | mail --subject "{{subject_line}}" {{to_user@example.com}}
mail {{[-h|--help]}}