Chapter 9: Services and the boot process

systemd and boot quiz

Ten questions across the whole chapter. Each answer explains why. Aim for eight before moving on to chapter 10.

• Which command starts a service now and at every boot?
• A unit is "enabled" but "inactive". What does that mean?
• Where do you put your own unit file?
• After creating a unit file, what must you run?
• Which command shows the log of one service?
• Which target is the usual default for a server without a GUI?
• What does systemctl set-default multi-user.target change?
• Which command shows how long each unit took to start?
• How do you stop a service from ever being started, even as a dependency?
• At the GRUB menu, which key lets you edit the boot entry for this boot only?