.\" Copyright (c) 1991 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.
.\"
.\" %sccs.include.redist.roff%
.\"
.\"	@(#)logname.1	5.3 (Berkeley) %G%
.\"
.Dd ""
.Dt LOGNAME 1
.Os BSD 4.4
.Sh NAME
.Nm logname
.Nd display user's login name
.Sh SYNOPSIS
.Nm logname
.Sh DESCRIPTION
The
.Nm logname
utility writes the user's login name to standard output followed by
a newline.
.Pp
The
.Nm logname
utility explicitly ignores the
.Ev LOGNAME
and
.Ev USER
environment variables
because the environment cannot be trusted.
.Pp
The
.Nm logname
utility exits 0 on success, and >0 if an error occurs.
.Sh SEE ALSO
.Xr who 1 ,
.Xr whoami 1 ,
.Xr getlogin 3
.Sh STANDARDS
The
.Nm logname
function is expected to conform to
.St -p1003.2 .
.Sh HISTORY
The
.Nm
command appears in
.Bx 4.4 .