1.\" Copyright (c) 1991 The Regents of the University of California. 2.\" 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.\" %sccs.include.redist.roff% 8.\" 9.\" @(#)logname.1 5.2 (Berkeley) 07/23/91 10.\" 11.Dd "" 12.Dt LOGNAME 1 13.Os 14.Sh NAME 15.Nm logname 16.Nd display user's login name 17.Sh SYNOPSIS 18.Nm logname 19.Sh DESCRIPTION 20The 21.Nm logname 22utility writes the user's login name to standard output followed by 23a newline. 24.Pp 25The 26.Nm logname 27utility explicitly ignores the 28.Ev LOGNAME 29and 30.Ev USER 31environment variables 32because the environment cannot be trusted. 33.Pp 34The 35.Nm logname 36utility exits 0 on success, and >0 if an error occurs. 37.Sh SEE ALSO 38.Xr who 1 , 39.Xr whoami 1 , 40.Xr getlogin 3 41.Sh STANDARDS 42The 43.Nm logname 44function is expected to conform to 45.St -p1003.2 . 46.Sh HISTORY 47The 48.Nm 49command is 50.Ud . 51