How to send mail in unix shell script

In a Unix shell script, you can send an email using the mail command or sendmail command. Here are some examples:

Using the mail command:

mail -s "Subject" [email protected] << EOF
Body of the email
EOF

This will send an email to [email protected] with the subject "Subject" and the body "Body of the email".

Using the sendmail command:

sendmail -v [email protected] << EOF
Subject: Subject
Body of the email
EOF

This will also send an email to [email protected] with the subject "Subject" and the body "Body of the email".

Using the mail command with attachments:

mail -s "Subject" [email protected] << EOF
Body of the email

Attachment: /path/to/attachment.txt
EOF

This will send an email to [email protected] with the subject "Subject", the body "Body of the email", and an attachment /path/to/attachment.txt.

Using the sendmail command with attachments:

sendmail -v [email protected] << EOF
Subject: Subject
Body of the email

Content-Type: text/plain; name="attachment.txt"
Content-Disposition: attachment; filename="attachment.txt"

/path/to/attachment.txt
EOF

This will also send an email to [email protected] with the subject "Subject", the body "Body of the email", and an attachment /path/to/attachment.txt.

Using a third-party email client: You can also use a third-party email client like mutt or msmtp to send emails from your Unix shell script.

For example, with mutt:

mutt -s "Subject" [email protected] << EOF
Body of the email
EOF

And with msmtp:

msmtp -v [email protected] << EOF
Subject: Subject
Body of the email
EOF

Make sure to configure your email client and set up your email account before using it in your shell script.

Note: The mail and sendmail commands are usually available on most Unix systems, but the syntax may vary depending on the specific implementation.