GETLOGIN(3C)            COMMAND REFERENCE            GETLOGIN(3C)



NAME
     getlogin - get loginname

SYNOPSIS
     char *getlogin()

DESCRIPTION
     Getlogin returns a pointer to the loginname as found in
     /etc/utmp.  It may be used in conjunction with getpwnam to
     locate the correct password file entry when the same user ID
     is shared by several loginnames.

     If getlogin is called within a process that is not attached
     to a typewriter, it returns NULL.  The correct procedure for
     determining the loginname is to first call getlogin and if
     it fails, to call getpw(getuid()).

FILES
     /etc/utmp

DIAGNOSTICS
     Returns NULL (0) if name not found.

CAVEATS
     The return values point to static data whose content is
     overwritten by each call.

SEE ALSO
     getgrent(3c), getpw(3c), getpwent(3c), and utmp(5).


























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