Mail su

You're trying to send a mail command!

mail is a command-line email client that allows you to send and receive emails. Here are some basic commands you can use:

Sending an email:

1. mail -s "Subject" [email protected] - This will open a new email with the specified subject and recipient.
2. mail -s "Subject" [email protected] < message.txt - This will send a pre-written email from a file named message.txt.

Reading and managing emails:

1. mail - This will list all your emails.
2. mail -f - This will list all your emails, including deleted ones.
3. mail -d <email_number> - This will delete the email with the specified number.
4. mail -r <email_number> - This will reply to the email with the specified number.
5. mail -f <email_number> - This will forward the email with the specified number.

Other commands:

1. mail -h - This will display the help menu.
2. mail -q - This will quit the mail client.

Note: The exact commands and options may vary depending on the mail client you're using.