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sendmail:tldr:824ff
This command is used to send an email using the sendmail program. Here's the breakdown of each component:
-
sendmail
: It is a command-line program available on Unix-like systems used to send email from a command prompt or from within scripts or programs. -
${username}
: It is a placeholder that represents the recipient's email address. You need to replace${username}
with the actual email address. -
<
: This operator is used to redirect the contents of a file as input to a command. In this case, it is redirecting the contents of the file${message-txt}
as the email body. -
${message-txt}
: It refers to a file containing the message or body of the email that you want to send. Similar to${username}
, you need to replace${message-txt}
with the actual file name that contains the email message.
Overall, this command takes the email address (stored in ${username}
) and the email message (stored in ${message-txt}
file) and sends it using the sendmail program, allowing you to automate the process of sending emails.