Linux Restrict Execution of /usr/sbin/userhelper to Console Users last updated October 3, 2009 in Categories CentOS, Debian / Ubuntu, Linux, RedHat and Friends, Security, Suse, Ubuntu Linux, User Management, X ServerI‘m CentOS Linux version 5.x user and I’d like to restrict execution of /usr/sbin/userhelper to console users only in xusers group?