On: Branchless Doom

[gerdesj]

Don't know why you got DVd. This does nothing on a VM running Kali Linux (systemd):

# kill -9 1

[abofh → gerdesj]

https://www.freedesktop.org/software/systemd/man/systemd.htm... - See signals

It's init dependent (though I think SIGKILL is blocked at the kernel – I wouldn't swear to it) - sigrtmin+3 will likely kill your init process :)

[gerdesj → abofh]

Cor, the locals are a bit harsh here.

I've just run # kill -L - there seem to me rather more signals available than I remember from the past. I'm pretty sure I have never even heard of the ones >16 let alone SIGRT{MIN|MAX}{|x}. I've only ever used SIGHUP or SIGKILL in general and SIGUSR1 for dd progress (which now has --progress at last)

Time to dig out the manual 8)

[int0x80 → abofh]

In Linux, from the manpage:

"The only signals that can be sent to process ID 1, the init process, are those for which init has explicitly installed signal handlers. This is done to assure the system is not brought down accidentally."

And SIGKILL can not be captured (enforced by the kernel):

"The signals SIGKILL and SIGSTOP cannot be caught or ignored."