How to tell what users Ruby

[Paul Schmehl]

I'm running ruby 2.4 on a server. I want to upgrade to the new default 
version, so I checked /usr/ports/UDPATING.

Among other things, it said this: "f you wish to update to the new default 
version, you need to first stop any software that uses ruby."

Is there a utility I can use that will tell me that? How do I identify what 
programs are using ruby?

Paul Schmehl, Retired
My opinions are my own.
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