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This article mainly talks about "what is the signal of linux process". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn what the linux process signal is.

. Process signal

Signal: the language needed for the process to communicate with the kernel

Controllable signal type

Man 7 signal

Controllable signal meaning 1 refresh (let the process read the configuration again) 2 interrupt keyboard input 3 exit keyboard 9 forced end (power off) 15 normal shutdown (normal shutdown) 18 activation process 19 forced pause 20 normal pause

Signal instruction

Kill signal pid can only end a single process

Pkill signaling process name

Killall-9 gedit ends all assignments

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