Update.lua

-- Update script
-- Automatically downloads ComputerCraft programs to a computer

urls = {
    {"Button",         "https://raw.githubusercontent.com/Jiggins/ComputerCraft/master/Button.lua"},
    {"MiningTurtle",   "https://raw.githubusercontent.com/Jiggins/ComputerCraft/master/MiningTurtle.lua"},
    {"EventListener",  "https://raw.githubusercontent.com/Jiggins/ComputerCraft/master/EventListener.lua"},
    {"ReactorControl", "https://raw.githubusercontent.com/Jiggins/ComputerCraft/master/ReactorControl.lua"},
    {"update",         "https://raw.githubusercontent.com/Jiggins/ComputerCraft/master/Update.lua"}
}

function download(name, url)
  print("Updating " .. name)
 
  request = http.get(url)
  data = request.readAll()
 
  if fs.exists(name) then
    fs.delete(name)
    file = fs.open(name, "w")
    file.write(data)
    file.close()
  else
    file = fs.open(name, "w")
    file.write(data)
    file.close()
  end
 
  print("Successfully downloaded " .. name .. "\n")
end

for key, value in ipairs(urls) do
    download(unpack(value))
end

term.clear()
term.setCursorPos()