opensolaris man page for whoami

whoami(1B)					     SunOS/BSD Compatibility Package Commands						whoami(1B)

NAME
       whoami - display the effective current username

SYNOPSIS
       /usr/ucb/whoami

DESCRIPTION
       whoami  displays  the  login  name  corresponding  to the current effective user ID. If you have used su to temporarily adopt another user,
       whoami will report the login name associated with that user ID. whoami gets its information from the geteuid and getpwuid library  routines
       (see getuid and getpwnam(3C), respectively).

FILES
       /etc/passwd    username data base

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       su(1M), who(1), getuid(2), getpwnam(3C), attributes(5)

SunOS 5.11							    14 Sep 1992 							whoami(1B)