FAQ

1. Why there are 2 steps not just one?

The reason lies in this command:
stty -icanon

icanon (-icanon)
Enable (disable) canonical input (ERASE and KILL processing).

This mode needs to be disabled in Step 1 otherwise in Step 2 you will lost many echo commands (They won't be executed). If the steps are merged this commands is working when everything was copied to putty windows from clipboard (which is too late).