Advanced Security Command

-- Not explained command:

local tryMax, try, pWord = 3, 0, "*"

local cmdPass, Pass = "Command","OpenDoor"

function CheckPass()

print("Enter Password: ("..try.."/"..tryMax.."):")
local sel = read(pWord)

if sel == cmdPass then
shell.run('clear')
print("Command Access Granted!")
sleep(1.5)
shell.run('clear')
elseif sel == Pass then
shell.run('clear')
print("Access Granted!")
sleep(1)
shell.run('clear')
redstone.setOutput("left", true)
local openTime = 5
for i=openTime, 1, -1 do
print("Closing in "..i.." seconds")
sleep(1)
shell.run('clear')
end
redstone.setOutput("left", false)
os.shutdown()
else
shell.run('clear')

if try < tryMax then
try = try + 1
print("Wrong password!")
sleep(1)
CheckPass()
return nil
else
print("Wrong password. Closing computer...") -- I don't make a LOCK...
wait(1.5)
shell.run('clear')
shell.run('shutdown')
return nil
end

end
end

CheckPass()