Startup -- Turtle

-- Load the Rednet API
rednet.open("left")

function captureOutput(func, ...)
    local oldTerm = term.redirect(term.native())
    local filter = function() return true end
    local co = coroutine.create(func)

    local function resume(...)
        local ok, event = coroutine.resume(co, ...)
        if not ok then
            error(event, 0)
        end
        return event
    end

    resume(...)  -- Initial call to start the coroutine

    while coroutine.status(co) ~= 'dead' do
        local eventData = {os.pullEvent()}
        if eventData[1] == "char" or eventData[1] == "key" then
            -- We ignore keypresses to the terminal
        else
            -- Send non-keypress terminal data to the computer
            if eventData[1] == "print" then
                rednet.send(computer_id, table.concat(eventData, ", ", 2))
            end
            resume(unpack(eventData))
        end
    end

    term.redirect(oldTerm)
end

-- Infinite loop to listen for commands
while true do
    local id, command = rednet.receive()
    if command:find("excavate ") then
        computer_id = id  -- Remember the computer's ID
        local size = command:gsub("excavate ", "")
        captureOutput(function() shell.run(command) end)
    end
end