Exit for STOW or CAT commands, or something similar?

Product/components used and version/fix level: Natural 8.2.3 or higher

Detailed explanation of the problem:

We would like to be able to receive control immediately after a user executes a CAT, STOW, or CATALL command, in order to record the event (library name, object name, and timestamp) in a separate file for later processing. Is there some kind of exit available that provides this? Any other ideas for accomplishing this?

Steff Gladstone