93 lines
3.0 KiB
Groff
93 lines
3.0 KiB
Groff
.\" $NetBSD: nologin.5,v 1.1 2005/12/09 17:02:53 ginsbach Exp $
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.\"
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.\" Copyright (c) 2005 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This document is derived from works contributed to The NetBSD Foundation
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.\" by Brian Ginsbach.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgment:
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.\" This product includes software developed by The NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 9, 2005
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.Dt NOLOGIN 5
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.Os
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.Sh NAME
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.Nm nologin
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.Nd file disallowing and containing reason for disallowing logins
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.Sh DESCRIPTION
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The file
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.Pa /etc/nologin ,
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if it exists, causes the login procedure, used by programs such as
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.Xr login 1 ,
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to terminate.
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The program may display the contents of
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.Pa /etc/nologin
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to the user before exiting.
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.Pp
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This file is a simple mechanism to temporarily prevent incoming logins.
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As such,
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the file
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.Pa /etc/nologin
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is created by
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.Xr shutdown 8
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five minutes before system shutdown,
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or immediately if shutdown is in less than five minutes.
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The file
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.Pa /etc/nologin
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is removed just before
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.Xr shutdown 8
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exits.
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.Pp
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To disable logins on a per-account basis,
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see
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.Xr nologin 8 .
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.Pp
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The file
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.Pa /etc/nologin
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has no affect on the login procedure for the root user.
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.Sh FILES
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.Bl -tag -width /etc/nologin -compact
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.It Pa /etc/nologin
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The
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.Nm
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file resides in
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.Pa /etc .
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.El
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.Sh EXAMPLES
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.Bd -literal
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NO LOGINS: System going down at 18:22
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.Ed
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.Sh SEE ALSO
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.Xr login 1 ,
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.Xr ftpd 8 ,
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.Xr nologin 8 ,
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.Xr rshd 8 ,
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.Xr shutdown 8 ,
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.Xr sshd 8
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