'\" te
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.TH logname 1 "2011 年 7 月 27 日" "SunOS 5.11" "用户命令"
.SH 名称
logname \- 返回用户的登录名
.SH 用法概要
.LP
.nf
\fB/usr/bin/logname\fR
.fi

.SH 描述
.sp
.LP
\fBlogname\fR 可将用户的登录名写入标准输出。登录名是 \fBgetlogin\fR(3C) 函数返回的字符串。如果 \fBgetlogin()\fR 未成功返回，则将使用与调用进程的实际用户 ID 相对应的名称。
.SH 环境变量
.sp
.LP
有关影响 \fBlogname\fR 执行的以下环境变量的说明，请参见 \fBenviron\fR(5)：\fBLANG\fR、\fBLC_ALL\fR、\fBLC_CTYPE\fR、\fBLC_MESSAGES\fR 和 \fBNLSPATH\fR。
.SH 退出状态
.sp
.LP
将返回以下错误值：
.sp
.ne 2
.mk
.na
\fB\fB0\fR\fR
.ad
.RS 6n
.rt  
成功完成。
.RE

.sp
.ne 2
.mk
.na
\fB\fB>0\fR\fR
.ad
.RS 6n
.rt  
出现错误。
.RE

.SH 文件
.sp
.ne 2
.mk
.na
\fB\fB/etc/profile\fR\fR
.ad
.RS 18n
.rt  
登录时的用户环境
.RE

.sp
.ne 2
.mk
.na
\fB\fB/var/adm/utmpx\fR\fR
.ad
.RS 18n
.rt  
用户和计帐信息
.RE

.SH 属性
.sp
.LP
有关下列属性的说明，请参见 \fBattributes\fR(5)：
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
属性类型属性值
_
可用性system/core-os
_
接口稳定性Committed（已确定）
_
标准请参见 \fBstandards\fR(5)。
.TE

.SH 另请参见
.sp
.LP
\fBenv\fR(1)、\fBlogin\fR(1)、\fBgetlogin\fR(3C)、\fButmpx\fR(4)、\fBattributes\fR(5)、\fBenviron\fR(5)、\fBstandards\fR(5)