From

FROM(1) - General Commands Manual

Mail, Biff, From

FROM(1) - General Commands Manual # FROM(1) - General Commands Manual NAME # from - print names of those who have sent mail SYNOPSIS # from [-f file] [-s sender] [user] DESCRIPTION # from prints out the mail header lines from the invoker’s mailbox. The options are as follows: -f file The supplied file is examined instead of the invoker’s mailbox. If the -f option is used, the user argument should not be used. ...