Use the following procedure to disable a machine's abort sequence. The default system behavior is that a system's abort sequence is enabled.
Some server systems have a key switch. When the switch is set in the secure position, the switch overrides the software keyboard abort settings. So, any changes that you make with the following procedure might not be implemented.
Become superuser or assume an equivalent role.
Change the value of KEYBOARD_ABORT to disable.
Comment out the enable line in the /etc/default/kbd file. Then add a disable line:
# vi /etc/default/kbd … # KEYBOARD_ABORT affects the default behavior of the keyboard abort # sequence, see kbd(1) for details. The default value is "enable". # The optional value is "disable". Any other value is ignored. … #KEYBOARD_ABORT=enable KEYBOARD_ABORT=disable
Update the keyboard defaults.
# kbd -i