系統 - Debian - 如何改變Run-Level

參考資訊：
https://www.server-world.info/en/note?os=Debian_12&p=runlevel

# systemctl set-default multi-user.target
    Created symlink /etc/systemd/system/default.target → /lib/systemd/system/multi-user.target.

# systemctl set-default graphical.target
    Created symlink /etc/systemd/system/default.target → /lib/systemd/system/graphical.target.