Offline package installation

I was really happy with how easy it was to install Julia on linux even though I have little Linux experience. Basically, just extract the zip file and I am done.

I got Julia v1 running Redhat Linux. How do I find out where .julia folder is? I understand I can just put the code there and it will recognise it.

And if I want to change it how do I do that? If I understand correctly here says that ENV["JULIA_HOME_DEPOT"]="/some/path" should suffice.