'\" te
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.TH logname 1 "27 Jul 2011" "SunOS 5.11" "User Commands"
.SH NAME
logname \- return user's login name
.SH SYNOPSIS
.LP
.nf
\fB/usr/bin/logname\fR
.fi

.SH DESCRIPTION
.sp
.LP
\fBlogname\fR writes the user's login name to standard output. The login name is the string that is returned by the \fBgetlogin\fR(3C) function. If \fBgetlogin()\fR does not return successfully, the name corresponding to the real user ID of the calling process is used instead.
.SH ENVIRONMENT VARIABLES
.sp
.LP
See \fBenviron\fR(5) for descriptions of the following environment variables that affect the execution of \fBlogname\fR: \fBLANG\fR, \fBLC_ALL\fR, \fBLC_CTYPE\fR, \fBLC_MESSAGES\fR, and \fBNLSPATH\fR.
.SH EXIT STATUS
.sp
.LP
The following error values are returned:
.sp
.ne 2
.mk
.na
\fB\fB0\fR\fR
.ad
.RS 6n
.rt  
Successful completion.
.RE

.sp
.ne 2
.mk
.na
\fB\fB>0\fR\fR
.ad
.RS 6n
.rt  
An error occurred.
.RE

.SH FILES
.sp
.ne 2
.mk
.na
\fB\fB/etc/profile\fR\fR
.ad
.RS 18n
.rt  
Environment for user at login time
.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/adm/utmpx\fR\fR
.ad
.RS 18n
.rt  
User and accounting information
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Availabilitysystem/core-os
_
Interface StabilityCommitted
_
StandardSee \fBstandards\fR(5).
.TE

.SH SEE ALSO
.sp
.LP
\fBenv\fR(1), \fBlogin\fR(1), \fBgetlogin\fR(3C), \fButmpx\fR(4), \fBattributes\fR(5), \fBenviron\fR(5), \fBstandards\fR(5)