rec.lua

-- rec.lua
local id, message, lock, name, mode
local info, num, val

while true do
    id, message = rednet.receive()
    lock = message[4]
    name = message[2] .. ".lua"

    if lock == "greenblock" then
        mode = message[1]

        if (mode == "read") then
            if fs.exists("Accounts/" .. name) then
                info = fs.open("Accounts/" .. name, "r")
                num = info.readLine()
                rednet.send(id, num)
                info.close()

            elseif fs.exists("Accounts/" .. name) == false then
                info = fs.open("Accounts/" .. name, "w")
                info.writeLine("0.00")
                rednet.send(id, "0.00")
                info.close()
            end

        elseif mode == "write" then
            val = message[3]
            info = fs.open("Accounts/" .. name, "w")
            info.writeLine(val)
            info.close()

        end
    end
end