startup

os.pullEvent = os.pullEventRaw -- Prevents CTRL+T shortcut
term.clear() -- Clears the screen
term.setCursorPos(1, 1) -- The places the print position to the top of screen

username = {"Sam"}  -- Here you need to define all usernames
password = {"5151"}  -- Here you define what password each user has, remember to put user1's password in the first row and so on.

write("Username: ")
user = read()

write("Password: ")
pass = read('*') -- This prevents people from reading the password as you put it in

for i=1, #username do -- Starts a loop
 if user == username[i] and pass == password[i] then
    access = true
 end
end

if access == true then
print("Logging in...")
sleep(1)
print("Welcome "..user)
sleep(2)
shell.run("clear")
print("Sam OS-0.1")
else
print("Incorrect username or password")
sleep(2)
os.reboot()
end