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+.\" 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. 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.
+.\"
+.\"	@(#)login.1	8.2 (Berkeley) 5/5/94
+.\" $FreeBSD: src/usr.bin/login/login.1,v 1.33 2007/11/30 11:02:36 philip Exp $
+.\"
+.Dd September 13, 2006
+.Dt LOGIN 1
+.Os
+.Sh NAME
+.Nm login
+.Nd log into the computer
+.Sh SYNOPSIS
+.Nm
+.Op Fl pq
+.Op Fl h Ar hostname
+.Op Ar user
+.Nm
+.Fl f
+.Op Fl lpq
+.Op Fl h Ar hostname
+.Op Ar user Op Ar prog Op Ar args...
+.Sh DESCRIPTION
+The
+.Nm
+utility logs users (and pseudo-users) into the computer system.
+.Pp
+If no user is specified, or if a user is specified and authentication
+of the user fails,
+.Nm
+prompts for a user name.
+Authentication of users is configurable via
+.Xr pam 8 .
+Password authentication is the default.
+.Pp
+The following options are available:
+.Bl -tag -width indent
+.It Fl f
+When a user name is specified, this option indicates that proper
+authentication has already been done and that no password need be
+requested.
+This option may only be used by the super-user or when an already
+logged in user is logging in as themselves.
+.Pp
+With the
+.Fl f
+option, an alternate program (and any arguments) may be run instead of the
+user's default shell.
+The program and arguments follows the user name.
+.It Fl h
+Specify the host from which the connection was received.
+It is used by various daemons such as
+.Xr telnetd 8 .
+This option may only be used by the super-user.
+.It Fl l
+Tells the program executed by
+.Nm
+that this is not a login session (by convention, a login session is
+signalled to the program with a hyphen as the first character of
+.Em argv[0] ;
+this option disables that), and prevents it from chdir(2)ing to the user's home directory.
+The default is to add the hyphen (this is a login session).
+.It Fl p
+By default,
+.Nm
+discards any previous environment.
+The
+.Fl p
+option disables this behavior.
+.It Fl q
+This forces quiet logins, as if a
+.Pa .hushlogin
+is present.
+.El
+.Pp
+If the file
+.Pa /etc/nologin
+exists,
+.Nm
+dislays its contents to the user and exits.
+This is used by
+.Xr shutdown  8
+to prevent users from logging in when the system is about to go down.
+.Pp
+Immediately after logging a user in,
+.Nm
+displays the system copyright notice, the date and time the user last
+logged in, the message of the day as well as other information.
+If the file
+.Pa .hushlogin
+exists in the user's home directory, all of these messages are suppressed.
+.Fl q
+is specified, all of these messages are suppressed.
+This is to simplify logins for non-human users, such as
+.Xr uucp 1 .
+.Nm
+then records an entry in
+.Xr utmpx 5
+and the like, and executes the user's command interpreter (or the program
+specified on the command line if
+.Fl f
+is specified).
+.Pp
+The
+.Nm
+utility enters information into the environment (see
+.Xr environ 7 )
+specifying the user's home directory (HOME), command interpreter (SHELL),
+search path (PATH), terminal type (TERM) and user name (both LOGNAME and
+USER).
+.Pp
+Some shells may provide a builtin
+.Nm
+command which is similar or identical to this utility.
+Consult the
+.Xr builtin 1
+manual page.
+.Pp
+The
+.Nm
+utility will submit an audit record when login succeeds or fails.
+Failure to determine the current auditing state will
+result in an error exit from
+.Nm .
+.Sh FILES
+.Bl -tag -width /var/mail/userXXX -compact
+.It Pa /etc/motd
+message-of-the-day
+.It Pa /etc/nologin
+disallows logins
+.It Pa /var/run/utmpx
+current logins
+.It Pa /var/mail/user
+system mailboxes
+.It Pa \&.hushlogin
+makes login quieter
+.It Pa /etc/pam.d/login
+.Xr pam 8
+configuration file
+.It Pa /etc/security/audit_user
+user flags for auditing
+.It Pa /etc/security/audit_control
+global flags for auditing
+.El
+.Sh SEE ALSO
+.Xr builtin 1 ,
+.Xr chpass 1 ,
+.Xr newgrp 1 ,
+.Xr passwd 1 ,
+.Xr rlogin 1 ,
+.Xr getpass 3 ,
+.Xr utmpx 5 ,
+.Xr environ 7
+.Sh HISTORY
+A
+.Nm
+utility appeared in
+.At v6 .