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Dangerous
kill -9 1

linux · bash · Beginner

Sends an uncatchable kill signal to PID 1. PID 1 is the init system that supervises every other service, so on most kernels this either panics the machine or leaves it running with nothing able to restart.

Signals to notice

  • -9 cannot be caught or cleaned up after
  • PID 1 is the process supervising every other service

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