Sendmail command in linux

The sendmail command in Linux is used to send emails from the command line. Here are some basic usage examples:

Basic Syntax:

sendmail [options] [email protected]

Options:

• -t : Read the message from standard input.
• -i : Ignore dot at the end of each line.
• -f : Specify the sender's email address.
• -v : Verbose mode, print debugging information.
• -V : Version information.

Examples:

1. Send a simple email:

   echo "Hello, world!" | sendmail [email protected]

   This will send an email with the subject "Hello, world!" and the body "Hello, world!" to the [email protected].

2. Send an email with a specific sender:

   sendmail -f [email protected] [email protected]

   This will send an email from the [email protected] to the [email protected].

3. Send an email with a specific subject:

   echo "Hello, world!" | sendmail -t -s "Hello, world!" [email protected]

   This will send an email with the subject "Hello, world!" and the body "Hello, world!" to the [email protected].

4. Send an email with attachments:

   sendmail -t -a /path/to/attachment [email protected]

   This will send an email with the attachment /path/to/attachment to the [email protected].

Note: The sendmail command is usually configured to use the system's default email settings, such as the sender's email address and the email server. If you want to use a specific email server, you may need to configure the sendmail command or use a different email client.

Alternative: If you want to send emails from the command line, you can also use other tools like mail or mutt.