ClearCase Support: Displaying ClearCase Version Numbers
This is the ClearCase command to determine what version of ClearCase that you are running as well as all the ClearCase patches that are installed too (if any). This command also displays the MVFS version, cleartool version, db_server version, and VOB database schema version number too. If MultiSite is installed, then this command will also display the MultiSite version and MultiSite patches that are installed (if any).
Each line in the output will be a separate software item with the item's version number.
by Phil for Humanity