.\"	$OpenBSD: logname.1,v 1.15 2022/07/25 02:25:55 jsg Exp $
.\"	$NetBSD: logname.1,v 1.5 1995/07/25 18:31:12 jtc Exp $
.\"
.\" Copyright (c) 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the Institute of Electrical and Electronics Engineers, Inc.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
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.\" 3. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\"
.\"	@(#)logname.1	8.1 (Berkeley) 6/9/93
.\"
.Dd $Mdocdate: July 25 2022 $
.Dt LOGNAME 1
.Os
.Sh NAME
.Nm logname
.Nd display user's login name
.Sh SYNOPSIS
.Nm logname
.Sh DESCRIPTION
The
.Nm
utility writes the user's login name to standard output followed by
a newline
.Pq Ql \en .
.Pp
The
.Nm
utility explicitly ignores the
.Ev LOGNAME
and
.Ev USER
environment variables
because the environment cannot be trusted.
.Sh EXIT STATUS
.Ex -std logname
.Sh SEE ALSO
.Xr who 1 ,
.Xr whoami 1 ,
.Xr getlogin 2
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2008
specification.
.Sh HISTORY
The
.Nm
command first appeared in PWB/UNIX 1.0
and was reimplemented for
.Bx 4.3 Net/2 .