blob: 58fe77bee07cfc9f6edfa918f9b3b133c8100f09 [file] [log] [blame]
.\" Copyright (c) 1993 Michael Haardt (michael@moria.de),
.\" Fri Apr 2 11:32:09 MET DST 1993
.\"
.\" %%%LICENSE_START(GPLv2+_DOC_FULL)
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, see
.\" <http://www.gnu.org/licenses/>.
.\" %%%LICENSE_END
.\"
.\" Modified Sun Jul 25 11:06:34 1993 by Rik Faith (faith@cs.unc.edu)
.\" Corrected Mon Oct 21 17:47:19 EDT 1996 by Eric S. Raymond (esr@thyrsus.com)
.TH NOLOGIN 5 2017-09-15 "Linux" "Linux Programmer's Manual"
.SH NAME
nologin \- prevent unprivileged users from logging into the system
.SH DESCRIPTION
If the file \fI/etc/nologin\fP exists and is readable,
.BR login (1)
will allow access only to root.
Other users will
be shown the contents of this file and their logins will be refused.
This provides a simple way of temporarily disabling all unprivileged logins.
.SH FILES
.I /etc/nologin
.SH SEE ALSO
.BR login (1),
.BR shutdown (8)