Section (5) nologin
Name
nologin — prevent unprivileged users from logging into the system
DESCRIPTION
If the file /etc/nologin
exists and is readable, 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.
COLOPHON
This page is part of release 4.16 of the Linux man-pages
project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
Copyright (c) 1993 Michael Haardt (michaelmoria.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_zsingle_quotesz_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 (faithcs.unc.edu) Corrected Mon Oct 21 17:47:19 EDT 1996 by Eric S. Raymond (esrthyrsus.com) |
Section (8) nologin
Name
nologin — politely refuse a login
Synopsis
nologin
[−V
] [−h
]
DESCRIPTION
nologin displays a message that an account is not available and exits non-zero. It is intended as a replacement shell field to deny login access to an account.
If the file /etc/nologin.txt exists, nologin displays its contents to the user instead of the default message.
The exit code returned by nologin is always 1.
NOTES
nologin is a per-account way to disable login (usually used for system accounts like http or ftp). nologin(8) uses /etc/nologin.txt as an optional source for a non-default message, the login access is always refused independently of the file.
pam_nologin(8) PAM module usually prevents all non-root users from logging into the system. pam_nologin(8) functionality is controlled by /var/run/nologin or the /etc/nologin file.
AVAILABILITY
The nologin command is part of the util-linux package and is available from Linux Kernel Archive
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