getty - Ubuntu İçin Login

Giriş

Açıklaması şöyle

First, you don't log in to a shell, you log in to a (virtual) terminal.

• a getty program opens a tty port, prompts for a login name and invokes a login program (/bin/login by default - although Linux's agetty may be configured to use a non-standard login program)
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• the login program performs authentication and session setup, including initializing the environment and invoking the user's login shell.

In current Ubuntu systems, getty is managed as a systemd service (ex. getty@tty1.service for the virtual terminal tty1), and login uses the Pluggable Authentication Modules (PAM) subsystem for authentication - in particular, the pam_unix module is "for traditional password authentication".