Disable ctrl alt del in CentOS

The ctrl + alt + del key combination function is set in the/etc/inittab file. The iniitab file contains the following two lines:

# Trap CTRL-ALT-DELETE

Ca: ctrlaltdel:/sbin/shutdown-t3-r now

Pressing ctrl + alt + del will restart the system, but the delay between sending alarm information to the process and killing the process signal will be 3 seconds.

# Trap CTRL-ALT-DELETE

# Ca: ctrlaltdel:/sbin/shutdown-t3-r now

When ctrl + alt + del is disabled, we can use the ctrlaltdel command to set the shutdown mode of ctrl + alt + del,

Parameters

Description

Hard

Restart the system now

Soft

Sends the sigint (interrupt) signal to the init process, and the init process processes the shutdown operation.