-adviser_only This option allows Glance to run with no screen displays to the terminal. Only the Adviser will run, sending it's output to stdout. With this option, the glance Adviser runs in the background, with stdout output optionally redirected to a file. If you want to run glance in "Adviser only" mode at startup time, you must include the -bootup option as well.
The manpage for glance provides valid example usage:
To run glance in the background against special adviser syntax, logging data to a file, you must first create a file that contains the appropriate adviser commands, then execute glance with stdout redirected to a file. For example: