mail [options] [users]Read mail (if no users listed), or send mail to other users. Type ? for a summary of commands. Esoteric debugging options exist (not listed) for system administrators. See also mailx and vacation.
-m typePrint a "Message-type:" line at the heading of the letter, followed by type of message.
-tPrint a "To:" line at the heading of the letter, showing the names of the recipients.
-wForce mail to be sent to remote users without waiting for remote transfer program to complete.
-eTest for the existence of mail without printing it. Exit status is 0 if mail exists; otherwise 1.
-f fileRead mail from alternate mailbox file.
-F namesForward all incoming mail to recipient names. SVR4 only. (See vacation in Appendix B.)
-hDisplay a window of messages rather than the latest message.
-pPrint all messages without pausing.
-PPrint messages with all header lines displayed.
-qTerminate on an interrupt.
-rPrint oldest messages first.