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Ok here's a question I should have asked like way sooner.
In Ubuntu (and similar distros), is there a hotkey to immediately kill the process? Like CTRL-C but harsher.
I use a process manager like btop for this.
My PC has a dedicated key to kill all processes.
sudo poweroff?
If you’re using X11, you can use xkill: https://en.m.wikipedia.org/wiki/Xkill
You can bind it to a key in gnome/kde (not sure how they handle custom keybinds. Otherwise add a call to xbindkeys to your .bashrc or equivalent). It kills any window you want, responsive or not.
As for the terminal, I don’t think you can send SIGKILL, but ctrl + \ will result in a core dump if you’re using bash.
CTRL-C -- SIGINT CTRL-\ -- SIGQUIT CTRL-Z +
kill -9 %1-- SIGTSTP + SIGKILL