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The program that waits for a user to log in on a text console is known generically as getty. (By the way, the corresponding program type for GUI logins is a display manager) This is also the program that prompts for the user name. The program that prompts for the password is login. There are several implementations of getty; the default one in Ubuntu 14.04 ...


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Basically you have to use pre-internet methods to transfer over a serial tty, and you must have a way to receive the transfer on the other side. Obviously the best way to do this is by using ZMODEM, which means you need to have a tool like sz already on the receiving end. However this isn't always possible, for example, when the receiving target is a router ...



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