What is the purpose of the message argument in the shutdown command?

To specify the reason for the shutdown in the system log

To set a custom shutdown script

To warn logged-in users about the upcoming shutdown

An administrator needs to shut down a server in 10 minutes for emergency maintenance. The administrator wants to send a warning message to all logged-in users. However, the administrator also wants to ensure that the message is displayed on all terminals, including those that may be in a locked state. Which command should the administrator use?

shutdown -h +10 'Emergency maintenance'

echo 'Emergency maintenance' and then shutdown -h +10

wall 'Emergency maintenance' and then shutdown -h +10

shutdown -h now 'Emergency maintenance'

What is the typical use of the wall command in shutdown procedures?

To force kill all user processes

To send a final warning to all users before shutdown

LPI LPIC-1:Linux Administrator (101-500)

Domain 1Objective 3

101.3 Change Runlevels / Boot Targets and Shutdown or Reboot System LPIC-1 Practice Questions (Page 5)

Part of the Topic 101: System Architecture domain, which makes up ~10% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 39 practice questions to prepare you well beyond it. (estimate)

39questions here

8free pages

15concepts

15 Concepts in This Objective

Understanding runlevels and boot targets
Identifying current runlevel or target
Changing runlevels with init and telinit
Changing boot targets with systemctl
Managing systemd targets and runlevels mapping
Shutting down the system
Rebooting the system
Halting and powering off
Scheduling shutdown and reboot
Canceling a scheduled shutdown
Sending messages to logged-in users
Using wall to notify users
Understanding systemd shutdown targets
Using systemctl for power management
Managing acpid and power buttons

Questions 21–25

21foundation · easy
Which systemd target is used to reboot the system?
Select an answer first
22foundation · easy
What is the purpose of the message argument in the shutdown command?
Select an answer first
23expert · hard
An administrator needs to shut down a server in 10 minutes for emergency maintenance. The administrator wants to send a warning message to all logged-in users. However, the administrator also wants to ensure that the message is displayed on all terminals, including those that may be in a locked state. Which command should the administrator use?
Select an answer first
24foundation · easy
Which command cancels a scheduled shutdown?
Select an answer first
25foundation · easy
What is the typical use of the wall command in shutdown procedures?
Select an answer first

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101.3 Change Runlevels / Boot Targets and Shutdown or Reboot System LPIC-1 Practice Questions (Page 5)

Questions 21–25

Which systemd target is used to reboot the system?

What is the purpose of the message argument in the shutdown command?

Which command cancels a scheduled shutdown?

What is the typical use of the wall command in shutdown procedures?

Keep studying — Topic 101: System Architecture