SLock

local hint=Instance.new("Hint",workspace)
local msg1="Now using SLock by Dev_Basics"
local msg2="This now means that players cannot join this server"
local msg3="To prevent specific players from getting kick add them to the whitelist"
local msg3="type 'whitelist/playername' to add a player to the whitelist"
local msg4="To disable Slock type 'slock/on'"
local msg5="Thank you for using Slock by Dev_Basics"

local whitelist={}
local slockenabled=true
local num=1

hint.Text=msg1
wait(5)
hint.Text=msg2
wait(5)
hint.Text=msg3
wait(5)
hint.Text=msg4
wait(5)
hint.Text=msg5


game.Players.ChildAdded:Connect(function(player)
   if slockenabled and not whitelist[player.Name] then
      hint.Text=player.Name.." attempted to join the server"
      workspace[player.Name]:Destroy()
   end
end)

for _,player in pairs(game.Players:GetPlayers()) do
   player.Chatted:Connect(function(msg)
      if string.sub(msg, 1, 10) == "whitelist/" then
         whitelist[#whitelist+1]=string.sub(msg, 11)
      elseif string.sub(msg, 1, 6) == "slock/" then
         local txt=string.sub(msg, 7)
         if txt == "off" then slockenabled=false end
      end
   end)
end