LOGNAME(1) General Commands Manual LOGNAME(1)

lognamedisplay user's login name

logname

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.

The logname utility exits 0 on success, and >0 if an error occurs.

who(1), whoami(1), getlogin(2)

The logname utility is expected to conform to IEEE Std 1003.2 (“POSIX.2”).

The logname command appeared in 4.4BSD.

June 9, 1993 BSD 4.4