bsd man page for from

FROM(1) 						      General Commands Manual							   FROM(1)

NAME
       from - who is my mail from?

SYNOPSIS
       from [ -s sender ] [ user ]

DESCRIPTION
       From prints out the mail header lines in your mailbox file to show you who your mail is from.  If user is specified, then user's mailbox is
       examined instead of your own.  If the -s option is given, then only headers for mail sent by sender are printed.

FILES
       /usr/spool/mail/*

SEE ALSO
       biff(1), mail(1)

4th Berkeley Distribution					  April 20, 1986							   FROM(1)