Simple ffi wrapper over gethostname(2) and sethostname(2)
local hostname = require 'hostname'
-- Simple get hostname
print("My hostname is", hostname())
-- my.example.com
-- Module interface
print("My hostname is", hostname.get())
-- my.example.com
print("My short host is", hostname.host())
-- my
-- Set hostname into name
local name = "newhost"
hostname.set(name)
-- If something went wrong, error will be raised