Elixir System.cmd Lock

I would like to create a system that automatically extracts github repositories using

System.cmd("git",["pull", link])

Does this command block? If I start it at the same time in many actors, can I always get as many actors (or at least a socket restriction for the system)?

If it’s not, did it happen?

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Erlang and, therefore, Elixir IO does not block, so the IO of one process does not affect other processes at all. Joe Armstrong describes this in a blog post :

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