NAME
logname – display user's login name
SYNOPSIS
logname
DESCRIPTION
The logname utility writes the user's login name to standard output followed by a newline.
The logname utility explicitly ignores the LOGNAME and USER environment variables because the environment cannot be trusted.
EXIT STATUS
The logname utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
STANDARDS
The logname utility is expected to conform to IEEE Std 1003.2 (“POSIX.2”).
HISTORY
The logname command appeared in 4.4BSD.