18fae3551SRodney W. Grimes.\" Copyright (c) 1993 28fae3551SRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 38fae3551SRodney W. Grimes.\" 48fae3551SRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 58fae3551SRodney W. Grimes.\" modification, are permitted provided that the following conditions 68fae3551SRodney W. Grimes.\" are met: 78fae3551SRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 88fae3551SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 98fae3551SRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 108fae3551SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 118fae3551SRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 12fbbd9655SWarner Losh.\" 3. Neither the name of the University nor the names of its contributors 138fae3551SRodney W. Grimes.\" may be used to endorse or promote products derived from this software 148fae3551SRodney W. Grimes.\" without specific prior written permission. 158fae3551SRodney W. Grimes.\" 168fae3551SRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 178fae3551SRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 188fae3551SRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 198fae3551SRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 208fae3551SRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 218fae3551SRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 228fae3551SRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 238fae3551SRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 248fae3551SRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 258fae3551SRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 268fae3551SRodney W. Grimes.\" SUCH DAMAGE. 278fae3551SRodney W. Grimes.\" 286f2b8776SMateusz Piotrowski.Dd April 15, 2020 298fae3551SRodney W. Grimes.Dt NOLOGIN 8 309fe48c6eSRuslan Ermilov.Os 318fae3551SRodney W. Grimes.Sh NAME 328fae3551SRodney W. Grimes.Nm nologin 338fae3551SRodney W. Grimes.Nd politely refuse a login 348fae3551SRodney W. Grimes.Sh SYNOPSIS 357c7fb079SRuslan Ermilov.Nm 368fae3551SRodney W. Grimes.Sh DESCRIPTION 37e1205e80SPhilippe CharnierThe 38e1205e80SPhilippe Charnier.Nm 396f2b8776SMateusz Piotrowskiis intended as a replacement shell field for accounts that 408fae3551SRodney W. Grimeshave been disabled. 417ba45ea9SNik Clayton.Pp 426f2b8776SMateusz PiotrowskiWhen executed, 436f2b8776SMateusz Piotrowski.Nm 44*57b9e06aSMateusz Piotrowskifirst writes about the login attempt to 456f2b8776SMateusz Piotrowski.Xr syslog 3 461565e188SMateusz Piotrowskiand then displays a message that an account is not available. 476f2b8776SMateusz Piotrowski.Pp 487ba45ea9SNik ClaytonTo disable all logins, 497ba45ea9SNik Claytoninvestigate 507ba45ea9SNik Clayton.Xr nologin 5 . 516f2b8776SMateusz Piotrowski.Sh EXIT STATUS 526f2b8776SMateusz PiotrowskiThe 536f2b8776SMateusz Piotrowski.Nm 546f2b8776SMateusz Piotrowskiutility always exits non-zero. 556f2b8776SMateusz Piotrowski.Sh EXAMPLES 566f2b8776SMateusz PiotrowskiHere is a demonstration of executing 576f2b8776SMateusz Piotrowski.Nm : 586f2b8776SMateusz Piotrowski.Bd -literal -offset 4n 596f2b8776SMateusz Piotrowski$ nologin 606f2b8776SMateusz PiotrowskiThis account is currently not available. 616f2b8776SMateusz Piotrowski$ tail -n 1 /var/log/messages 626f2b8776SMateusz PiotrowskiMar 30 21:53:07 example.org nologin[65992]: Attempted login by beastie on /dev/pts/18 636f2b8776SMateusz Piotrowski.Ed 648fae3551SRodney W. Grimes.Sh SEE ALSO 65a1c1a4e9SWolfram Schneider.Xr login 1 , 6632e5e4cfSBen Smithurst.Xr nologin 5 678fae3551SRodney W. Grimes.Sh HISTORY 688fae3551SRodney W. GrimesThe 6906389a25SPhilippe Charnier.Nm 70e1205e80SPhilippe Charnierutility appeared in 718fae3551SRodney W. Grimes.Bx 4.4 . 72