How to send mail from the Linux Command line (or shell script) using the mail command.
echo "This is the body of the email" | mail -s "Email Subject" recipient@domain.com -- -f senderaddress@domain.com
The -- -f section is used to plug in a sender address, otherwise the mail will be sent from your root or user account from the actual physical server name - e.g root@server1.domain.com
This comes in handy for notification of script execution, for example, jobs in the crontab. Placing this code immediately after the last command in a shell script will ensure relevant person(s) are notified when the script is called.
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