SYSTEMD-GETTY-GENERATOR(8) systemd-getty-generator SYSTEMD-GETTY-GENERATOR(8) -getty-systemd - getty /usr/lib/systemd/system-generators/systemd-getty-generator -getty-systemd serial-getty@.service ttys . serial-getty@.service . console-getty.service /dev/console container-getty@.service TTY ( [1]). . console= getty TTY . [2] console=. -getty-systemd systemd.generator(7). gettys systemd : Gettys ( )[3]. -getty-systemd kernel-command-line(7) : systemd.getty_auto= . . v258 : "credential" "container" "console" "builtin". "credential" getty.ttys.serial getty.ttys.container. . "container" console-getty.service container-getty@.service . . "console" serial-getty@.service . . "builtins" serial-getty@.service . . . . . . 250. $SYSTEMD_GETTY_AUTO . systemd.getty_auto=. 250. getty.auto . systemd.getty_auto=. 258. getty.ttys.serial getty.ttys.container TTY . TTY serial-getty@.service ( getty.ttys.serial) container-getty@.service ( getty.ttys.container) . "#". 254. systemd(1), kernel-command-line(7), systemd.system-credentials(7), agetty(8) 1. https://systemd.io/CONTAINER_INTERFACE 2. https://docs.kernel.org/admin-guide/kernel-parameters.html 3. systemd : Gettys ( ) https://0pointer.de/blog/projects/serial-console.html 3 . . : . systemd 260.1 SYSTEMD-GETTY-GENERATOR(8)