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