term.clear()
term.setCursorPos(1,1)
os.pullEvent=os.pullEventRaw
term.setTextColor(colors.yellow)
print('CraftOS 1.7')
while true do
  write('> ')
  term.setTextColor(colors.white)
  input = io.read()
  if input == 'stop' then
    term.setTextColor(colors.red)
    print('Virus deactivated...')
    break
  elseif false then
    term.setTextColor(colors.red)
    print('You are not sexy enough to do that')
  else
    printError("No such program") -- shorter
  end
  term.setTextColor(colors.yellow)
end