Looking for a script to remove invalid fonts

[OneSeventeen]

With our designers and video team I constantly find running the fontbook validator and removing invalid fonts to be very helpful in improving mac performance.

I know there is a ftxvalidator app from the apple developer site here: https://developer.apple.com/fonts/ (part of the Apple Font Tool Suite, I believe), but I haven't quite figured out an ideal way to push the app out and test all fonts, removing invalid ones.

Have any of you done something to repair a system with bad fonts via self service?

[talkingmoose]

I haven't tried the tool you mentioned myself, but looks like it has command line support according to this website:

https://blog.idrsolutions.com/2013/09/using-os-xs-font-validator/

It creates a plist file, which you should be able to parse using either the defaults or PlistBuddy tool.