I haven't had a chance to try this on a Linux box. Have you tried a backslash before the asterisk? If that doesn't work, I'd try to find an OOo mailing list with Linux users and ask there.
Thanks for the quick answer. The backslash doesn't do. I'll post if I find a solution. Once again, really a very useful tool, a month ago I was asking for something like this on OO forums.
Best regards