Superminer startup

local version = "1.0"
local pastebinCode = "DjYnc3QN"

local fileList = {}
local lastFile = ""
local fileHandle = ""
local countdown = 10
local event = ""
local param1 = ""
local doContinue = true

fileQualifier = ""
newFileNumber = 0

term.clear()
term.setCursorPos(1,1)
print("Superminer startup version "..version)
if fs.exists("/Reboot") then
    if fs.exists("Reboot/reboot001.log") then
        fileList = fs.find("Reboot/*.log")
        table.sort(fileList)
        lastFile = fileList[#fileList]
        fileQualifier = string.sub(lastFile, 14, 16)
        newFileNumber = tonumber(fileQualifier) + 1
        if newFileNumber < 10 then
            fileQualifier = "00"..tostring(newFileNumber)
        elseif newFileNumber < 100 then
            fileQualifier = "0"..tostring(newFileNumber)
        else
            fileQualifier = tostring(newFileNumber)
        end
    else
        fileQualifier = "001"
    end
else
    print("Reboot directory created")
    fs.makeDir("/Reboot")
    fileQualifier = "001"
end
fileHandle = fs.open("Reboot/reboot"..fileQualifier..".log", "w")
fileHandle.writeLine("Turtle restarted")
fileHandle.close()
print("Reboot logfile written: Reboot/reboot"..fileQualifier..".log")
repeat
    os.startTimer(2)
    local event, param1 = os.pullEvent()
    if event == "timer" then
        term.setCursorPos(1,6)
        print("loading superminer in "..countdown.." secs...")
        print()
        print("Press 'x' to abort")
        countdown = countdown - 1
    elseif event == "char" and param1 == "x" then
        print("Startup aborted")
        doContinue = false
        break
    end
until countdown == 0

if doContinue then
    if fs.exists("superminer.lua") then
        shell.run("superminer.lua")
    elseif fs.exists("Superminer") then
        shell.run("Superminer")
    else
        print()
        print("Cannot find superminer.lua or superminer")
    end
else
    doContinue = true
    sleep(1)
    term.clear()
    term.setCursorPos(1,1)
    print("Superminer startup menu:")
    print()
    print("Choose your option:")
    print()
    print("1 Reset all - New mining position")
    print("2 Reset reboot file")
    print("3 Exit to CraftOS")
    event, param1 = os.pullEvent ("char")
    if param1 == "1" then
        if fs.exists("/Reboot") then
            fs.delete("/Reboot")
            print("Reboot folder deleted")
        end
        if fs.exists("superminer.ini") then
            fs.delete("superminer.ini")
            print("Configuration file deleted")
        end
        if fs.exists("superminer.recover") then
            fs.delete("superminer.recover")
            print("Recovery file deleted")
        end
        fileList = fs.find("*.txt")
        if fileList ~= nil then
            table.sort(fileList)
            for i = 1, #fileList do
                fs.delete(fileList[i])
            end
            print ("Logfiles deleted")
        end
    elseif param1 == "2" then
        if fs.exists("/Reboot") then
            fs.delete("/Reboot")
            print("Reboot folder deleted")
        else
            print("Reboot folder already deleted")
        end
    elseif param1 == "3" then
        term.clear()
        term.setCursorPos(1,1)
        doContinue = false
    end
    if doContinue then
        sleep(2)
        term.clear()
        term.setCursorPos(1,1)
        print("Reset request successful")
        print()
        print("Type 'reboot' at terminal to start here")
        print()
        print("Exit, break turtle and move to start elsewhere")
    end
end