LOGNAME(1) User Commands LOGNAME(1)

NAME

logname - return user's login name

SYNOPSIS

logname

DESCRIPTION

The logname utility writes the user's login name to standard output. The
login name is the string that would be returned by the getlogin(3C)
function. If getlogin() does not return successfully, the name
corresponding to the real user ID of the calling process is used instead.
If a name cannot be found, the user's ID will be printed.

ENVIRONMENT VARIABLES

See environ(7) for descriptions of the following environment variables
that affect the execution of logname: LANG, LC_ALL, LC_CTYPE,
LC_MESSAGES, and NLSPATH.

EXIT STATUS

The following error values are returned:

0
Successful completion.


>0
An error occurred.

FILES

/etc/profile
environment for user at login time


/var/adm/utmpx
user and accounting information

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Committed |
+--------------------+-------------------+
|Standard | See standards(7). |
+--------------------+-------------------+

SEE ALSO

env(1), login(1), getlogin(3C), utmpx(5), attributes(7), environ(7),
standards(7)

October 25, 2019 LOGNAME(1)