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LFCS · Question #682

Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

The correct answer is C. /etc/inittab. In SysV init systems, the /etc/inittab file is modified to control system actions, including disabling the Ctrl-Alt-Delete key combination.

Submitted by miguelv· Apr 18, 2026Operation of Running Systems

Question

Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

Options

  • A/etc/keys
  • B/proc/keys
  • C/etc/inittab
  • D/proc/inittab
  • E/etc/reboot

How the community answered

(36 responses)
  • B
    6% (2)
  • C
    86% (31)
  • D
    3% (1)
  • E
    6% (2)

Why each option

In SysV init systems, the /etc/inittab file is modified to control system actions, including disabling the Ctrl-Alt-Delete key combination.

A/etc/keys

/etc/keys is not a standard SysV init configuration file for key combination actions.

B/proc/keys

/proc/keys is a virtual file providing information about kernel keyrings, not for configuring system behavior.

C/etc/inittabCorrect

The /etc/inittab file is the primary configuration for SysV init, where entries like 'ca::ctrlaltdel:/sbin/shutdown -t5 -r now' define actions for the Ctrl-Alt-Del key sequence; commenting or removing this line disables the action.

D/proc/inittab

/proc/inittab does not exist as a configuration file for SysV init; configuration is in /etc/inittab.

E/etc/reboot

/etc/reboot is not a standard SysV init configuration file used to disable the Ctrl-Alt-Delete key combination.

Concept tested: SysV init Ctrl-Alt-Del configuration

Topics

#SysV init#init configuration#System shutdown#Keyboard shortcuts

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