Thanks to all for their opinion.
Now the last question: Could init sent on ctr-alt-del at least TERM and
KILL to all processes in case, everything else failed ?
Could systemd do that?
My answers are YES and NO, but I may be wrong.
For systemd I saw (after power interruption) in the log this:
Jul 6 11:46:51 server systemd[1]: Failed to enqueue ctrl-alt-del.target
job: Unit ctrl-alt-del.target failed to load: Not a directory. See system logs and
'systemctl status
ctrl-alt-del.target' for details.
This is the only response to ctrl-alt-del.
You can of course "see" nothing, you can not login localy because:
Jul 6 11:45:42 server systemd[1]: getty(a)tty1.service holdoff time over, scheduling
restart.
Adam Pribyl