/usr/share/doc/lua5.1-doc/test/hello.lua is in lua5.1-doc 5.1.5-5ubuntu0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | -- the first program in every language
io.write("Hello world, from ",_VERSION,"!\n")
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