[HowTo] reboot / turn off your frozen computer: REISUB/REISUO

If,
A = “Add to your /etc/default/grub . . .”
B = “Execute echo kernel.sysrq=1 | sudo tee --append /etc/sysctl.d/99-sysctl.conf
C = “Execute sudo update-grub
D = “Reboot normally”,
where do I have to put the parentheses in the ill-expressed statement of A XOR B AND C AND D? (Seriously asking).

Another part that I am not sure 100% understanding is in the key press sequences

am I supposed to press one of those Alt combinations and then release the keys other than the Alt, and with Alt key still pressed I should press the REISUB key sequences with the mentioned interval?

1 Like