1.\" $OpenBSD: logname.1,v 1.13 2009/02/08 17:15:10 jmc Exp $ 2.\" $NetBSD: logname.1,v 1.5 1995/07/25 18:31:12 jtc Exp $ 3.\" 4.\" Copyright (c) 1991, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" This code is derived from software contributed to Berkeley by 8.\" the Institute of Electrical and Electronics Engineers, Inc. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)logname.1 8.1 (Berkeley) 6/9/93 35.\" 36.Dd $Mdocdate: February 8 2009 $ 37.Dt LOGNAME 1 38.Os 39.Sh NAME 40.Nm logname 41.Nd display user's login name 42.Sh SYNOPSIS 43.Nm logname 44.Sh DESCRIPTION 45The 46.Nm 47utility writes the user's login name to standard output followed by 48a newline 49.Pq Ql \en . 50.Pp 51The 52.Nm 53utility explicitly ignores the 54.Ev LOGNAME 55and 56.Ev USER 57environment variables 58because the environment cannot be trusted. 59.Pp 60.Ex -std logname 61.Sh SEE ALSO 62.Xr who 1 , 63.Xr whoami 1 , 64.Xr getlogin 2 65.Sh STANDARDS 66The 67.Nm 68utility is compliant with the 69.St -p1003.1-2008 70specification. 71.Sh HISTORY 72The 73.Nm 74command appeared in 75.Bx 4.4 . 76