check if file exists

[Markus Huber <pulse@...>]

Any ideas how to check the existence of a file?
Or better read the object type e.g.:

   0 doesn't exist
   1 is a file
   2 is a directory
   3 is a link (I don't know the exact name of this type)

Independent of the file access attributes!

I feel that very few further functions are needed to make Lua a great
language for file manipulation. Like read/set access rights and read
directory entries.


--
Markus