This is the full pathname to a script that will be run by smbd 8 when a machine is added to it's domain using the administrator username and password method. This option is only required when using sam back-ends tied to the Unix uid method of RID calculation such as smbpasswd. This option is only available in Samba 3.0. /usr/sbin/adduser -n -g machines -c Machine -d /var/lib/nobody -s /bin/false %u