Sending mail mail [ –tw ] [ –m message_type ] recipient… rmail [ –tw ] [ –m message_type ] recipient… Reading mail mail [ –ehpPqr ] [ –f filename ] Forwarding mail mail –F recipient… Debugging mail [ –x debug_level ] [ other_mail_options ] recipient… mail [ –T mailsurr_file ] recipient…
A recipient is usually a username recognized by login(1). When recipients are named, mail assumes a message is being sent. It reads from the standard input up to an end-of-file (Ctrl-D), or if reading from a terminal, until it reads a line consisting of just a period. When either of those indicators is received, mail adds the letter to the mailfile for each recipient.
3.16.79.147