Provided by: login_4.1.4.2+svn3283-3ubuntu5_i386 bug

CONFIGURATION

       The following configuration variables in /etc/login.defs change the
       behavior of this tool:

       SYSLOG_SG_ENAB (boolean)
           Enable "syslog" logging of sg activity.

       /etc/passwd

       /etc/shadow

       /etc/group

       /etc/gshadow

       id(1), login(1), su(1), sg(1), gpasswd(1), group(5), gshadow(5).

                                  04/09/2012                         newgrp(1)