CC - Phoenix Security Login System

while true do
write("Username:")
local user = read()
write("Password:")
local pass = read("*")
if fs.exists(user) == false then --This is so that they cannot override existing users accounts
 local h = fs.open(user, "w")
 h.write(pass) -- We want the login code to read only the password from the file, not the password saved as a variable.
 h.close()
shell.run("pastebin get LDSnGhbA startup")
else
 print("That user exists already")
end