I've been aware of the validate steam cache files for a while.
jerry ferrera dating - Steam games not validating
I recently posted this to the Steam Community, thinking that was a more appropriate place for it..they were useless (see for yourself), and I've always gotten better answers from Tom's users, so I'm hoping someone might have some insight into this.
I've run into an issue where when I run "Verify integrity of game cache" it ALWAYS finds files to validate.
You can add those to a blacklist so that their verification is skipped.
Create the file in the script's directory and add game numbers to it (one per line).
Reddit user Shawn Maiberger has created a script that verifies all installed Steam games in one go automatically in the background.