lua package.pathlua: test.lua:2: module 'socket' not found: no field package.preload['socket'] no file '/usr/local/share/lua/5.2/socket.lua' no file '/usr/local/share/lua/5.2/socket/init.lua' no file '/usr/local/lib/lua/5.2/socket.lua' no file '/usr/local/lib/lua/5.2/soc