NetBSD-5.0.2/usr.bin/biff/biff.1

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.\"	$NetBSD: biff.1,v 1.9 2003/08/07 11:13:12 agc Exp $
.\"
.\" Copyright (c) 1980, 1990, 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
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.\"     @(#)biff.1	8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt BIFF 1
.Os
.Sh NAME
.Nm biff
.Nd "be notified if mail arrives and who it is from"
.Sh SYNOPSIS
.Nm
.Op Cm ny
.Sh DESCRIPTION
.Nm
informs the system whether you want to be notified when mail arrives
during the current terminal session.
.Pp
Options supported by
.Nm :
.Bl -tag -width 4n
.It Cm n
Disables notification.
.It Cm y
Enables notification.
.El
.Pp
When mail notification is enabled, the header and first few lines of
the message will be printed on your screen whenever mail arrives.
A
.Dq Li biff y
command is often included in the file
.Pa \&.login
or
.Pa \&.profile
to be executed at each login.
.Pp
.Nm
operates asynchronously.
For synchronous notification use the
.Ar MAIL
variable of
.Xr sh 1
or the
.Ar mail
variable of
.Xr csh 1 .
.Sh SEE ALSO
.Xr csh 1 ,
.Xr mail 1 ,
.Xr sh 1 ,
.Xr comsat 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.0 .