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"트랩"의 모든 신호를 추적하는 방법은 무엇입니까?

tag-icon • tag-icon shell signals trap
"트랩"의 모든 신호를 추적하는 방법은 무엇입니까?

스크립트를 사용하여 키보드 단축키와 일부 kill명령을 테스트하고 어떤 신호가 포착되는지 알 수 있습니까 trap?

답변1

이 스크립트를 사용하면 모든 신호를 테스트할 수 있습니다.

#!/bin/sh
# Know which signal is caught
# man 7 signal
trap "echo 'SIGHUP        1       Term    Hangup (disconnection) or control process termination.'" 1
trap "echo 'SIGINT        2       Term    Interrupt from keyboard.'" 2
trap "echo 'SIGQUIT       3       Core    Quit request from keyboard.'" 3
trap "echo 'SIGILL        4       Core    Illegal instruction.'" 4
trap "echo 'signal 5 not referenced'" 5
trap "echo 'SIGABRT       6       Core    Abort signal from abort(3).'" 6
trap "echo 'signal 7 not referenced'" 7
trap "echo 'SIGFPE        8       Core    Floating point arithmetic error.'" 8
trap "echo 'signal 10 not referenced'" 10
trap "echo 'SIGSEGV      11       Core    Invalid memory reference.'" 11
trap "echo 'signal 12 not referenced'" 12
trap "echo 'SIGPIPE      13       Term    Write on a pipe with no reader.'" 13
trap "echo 'SIGALRM      14       Term    Alarm clock signal (used by alarm(2)).'" 14
trap "echo 'SIGTERM      15       Term    Termination signal.'" 15
trap "echo 'SIGUSR1   30,10,16    Term    User-defined signal 1.'" 30 10 16
trap "echo 'SIGUSR2   31,12,17    Term    User-defined signal 2.'" 31 12 17
trap "echo 'SIGCHLD   20,17,18    Ign     Child stopped or terminated.'" 20 17 18
trap "echo 'SIGCONT   19,18,25    Cont    Continue if stopped.'" 19 18 25
trap "echo 'SIGTSTP   18,20,24    Stop    Stop signal generated from keyboard.'" 18 20 24
trap "echo 'SIGTTIN   21,21,26    Stop    Background process attempting to read from tty.'" 21 21 26
trap "echo 'SIGTTOU   22,22,27    Stop    Background process attempting to write to tty.'" 22 22 27
trap "echo 'SIGWINCH  28,28,20    Ign     Window resize signal (4.3 BSD, Sun).'" 28 20
read _

이러한 신호는 포착, 차단 또는 무시될 SIGKILL수 없습니다 . SIGSTOP( 9, 19).

바라보다맨 7 시그널

그리고http://mywiki.wooledge.org/SignalTrap

복사/붙여넣기를 방지하려면:

wget -O signal-finder.sh https://gist.githubusercontent.com/sputnick-dev/7260ac0aa46f067f469ee8184b69acb3/raw/4286bcda6d3353aad7584ab320048af4d8bfa197/gistfile1.txt
chmod +x signal-finder.sh
./signal-finder.sh

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