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cad_pid

file: /proc/sys/kernel/cad_pid
variable: kernel.cad_pid
Official reference

This is the pid which will be signalled on reboot (notably, by Ctrl-Alt-Delete). Writing a value to this file which doesn’t correspond to a running process will result in -ESRCH.

See also ctrl-alt-del.

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Last update: 2026-03-30 12:00:00 UTC
Parsed kernel version 6.18 from git

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Updated by Ilya Vasilyev aka Nadz Goldman from Arviol ( vStack dep. ), ITG