Hm, it returns the engine & dat version for me. See below.
root@administrator-desktop:/usr/local/uvscan# uvscan --version
McAfee VirusScan Command Line for Linux32 Version: 184.108.40.2066
Copyright (C) 2010 McAfee, Inc.
(408) 988-3832 LICENSED COPY - July 28 2011
AV Engine version: 5400.1158 for Linux32.
Dat set version: 6593 created Jan 18 2012
Scanning for 663206 viruses, trojans and variants.
Are you sure you waited until the command prompt returned ?
You're right, rackroyd. I didn't wait it to return. It seems the reason why I wasn't able to see the remaining information below. Thanks a lot!