How can I determine the OS of the system from within a Lua script?

Question

Ok I need to determine the system\'s OS from a Lua script, but Lua as such has no API for this, so I use os.getenv() and query enviromental variables. On Windows checking the en

Answer 1

Unixes should have the $HOME variable (while Windows doesn't have that), so you can check it (after checking the OS variable is empty).