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+.\" Copyright (c) 1980, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.bp
+.sh 1 "Command line options"
+.pp
+This section describes command line options for
+.i Mail
+and what they are used for.
+.ip \-N
+Suppress the initial printing of headers.
+.ip \-d
+Turn on debugging information.  Not of general interest.
+.ip "\-f file\ \ "
+Show the messages in
+.i file
+instead of your system mailbox.  If
+.i file
+is omitted,
+.i Mail
+reads
+.i mbox
+in your home directory.
+.ip \-i
+Ignore tty interrupt signals.  Useful on noisy phone lines, which
+generate spurious RUBOUT or DELETE characters.  It's usually
+more effective to change your interrupt character to control\-c,
+for which see the
+.i stty
+shell command.
+.ip \-n
+Inhibit reading of /etc/mail.rc.  Not generally useful, since
+/etc/mail.rc is usually empty.
+.ip "\-s string"
+Used for sending mail.
+.i String
+is used as the subject of the message being composed.  If
+.i string
+contains blanks, you must surround it with quote marks.
+.ip "\-u name"
+Read
+.i names's
+mail instead of your own.  Unwitting others often neglect to protect
+their mailboxes, but discretion is advised. Essentially,
+.b "\-u user"
+is a shorthand way of doing
+.b "\-f /var/mail/user".
+.ip "\-v"
+Use the
+.b \-v
+flag when invoking sendmail. This feature may also be enabled
+by setting the option "verbose".
+.pp
+The following command line flags are also recognized, but are
+intended for use by programs invoking
+.i Mail
+and not for people.
+.ip "\-T file"
+Arrange to print on
+.i file
+the contents of the
+.i article-id
+fields of all messages that were either read or deleted.
+.b \-T
+is for the
+.i readnews
+program and should NOT be used for reading your mail.
+.ip "\-h number"
+Pass on hop count information.
+.i Mail
+will take the number, increment it, and pass it with
+.b \-h
+to the mail delivery system.
+.b \-h
+only has effect when sending mail and is used for network mail
+forwarding.
+.ip "\-r name"
+Used for network mail forwarding:  interpret
+.i name
+as the sender of the message.  The
+.i name
+and
+.b \-r
+are simply sent along to the mail delivery system.  Also,
+.i Mail
+will wait for the message to be sent and return the exit status.
+Also restricts formatting of message.
+.pp
+Note that
+.b \-h
+and
+.b \-r ,
+which are for network mail forwarding, are not used in practice
+since mail forwarding is now handled separately.  They may
+disappear soon.