File: //snap/core24/current/lib/systemd/system-generators/console-conf-generator
#!/bin/sh
set -eux
NORMAL_DIR="${1}"
EARLY_DIR="${2}"
LATE_DIR="${3}"
for tty in $(cat /sys/class/tty/console/active); do
    case "${tty}" in
      tty[0-9]*)
          # regular ttys
          mkdir -p "${NORMAL_DIR}/getty.target.wants"
          ln -sf /usr/lib/systemd/system/console-conf@.service \
             "${NORMAL_DIR}/getty.target.wants/console-conf@${tty}.service"
          ;;
      *)
          # assume each of these is a serial
          mkdir -p "${NORMAL_DIR}/getty.target.wants"
          ln -sf /usr/lib/systemd/system/serial-console-conf@.service \
             "${NORMAL_DIR}/getty.target.wants/serial-console-conf@${tty}.service"
          ;;
    esac
done