Run an arbitrary URL as Lua code in ComputerCraft (Minecraft)

urlex.lua

-- Execute a URL as Lua code in ComputerCraft
-- Usage: "urlex URL" 
-- Parse arguments
local args = {...}
local url = args[1]

-- Load the page
local page = http.get(args[1])
src = page.readAll()
page.close()

-- Eval the page contents as Lua code
local func, error = loadstring(src)
if func then
    func()
else
    print("Error: ", error)
end