Hécate Moonlight on Nostr: Systems programmers, I want to understand the tools for debugging a bit better. I ...

Systems programmers, I want to understand the tools for debugging a bit better. I have a program that accumulates a lot of file handles, so much so that it sometimes hit the OS limit, before releasing them upon process termination.

Are there tools available that I could use to understand better the behaviour of such a program? It's a fairly complex program, and I'd like to improve my skills at debugging such situations with the binary only.