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сигналы [2015/12/10 15:20] val [Сигналы] |
сигналы [2021/10/04 09:00] val |
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====== Сигналы ====== | ====== Сигналы ====== | ||
- | * [[http://ru.wikipedia.org/wiki/Сигналы_(UNIX)]] | + | * [[https://ru.wikipedia.org/wiki/Сигналы_(UNIX)#Сигналы (UNIX) - Википедия]] |
<code> | <code> | ||
- | $ sudo kill -L | + | # kill -l |
</code> | </code> | ||
- | ===== PID ===== | + | ===== Определение PID процесса ===== |
<code> | <code> | ||
- | # ps ax | grep named | grep -v grep | + | # /usr/sbin/sshd |
- | # cat /var/run/named/pid | + | # ps ax | grep ssh | grep -v grep |
- | или | + | |
- | # cat /var/run/named/named.pid | + | |
+ | # cat /var/run/sshd.pid | ||
+ | </code> | ||
+ | ===== Отправка сигнала ===== | ||
+ | <code> | ||
# kill -s <SIGNAL> <PID> | # kill -s <SIGNAL> <PID> | ||
# kill -<SIGNAL> <PID> | # kill -<SIGNAL> <PID> | ||
- | # killall -<SIGNAL> named | + | # pkill -<SIGNAL> sshd |
+ | |||
+ | # apt install psmisc | ||
+ | |||
+ | # killall -<SIGNAL> sshd | ||
</code> | </code> | ||
===== TERM ===== | ===== TERM ===== | ||
+ | |||
+ | * чаще всего - остановка процесса | ||
+ | |||
<code> | <code> | ||
# kill <PID> | # kill <PID> | ||
Line 29: | Line 38: | ||
===== HUP ===== | ===== HUP ===== | ||
+ | |||
+ | * чаще всего - освободить терминал или перечитать файл конфигурации | ||
+ | |||
<code> | <code> | ||
# kill -1 <PID> | # kill -1 <PID> | ||
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# kill -HUP <PID> | # kill -HUP <PID> | ||
- | $ nohup find / -name index.html > search.result.txt 2>/dev/null & | + | $ nohup /usr/bin/ssh -N -R 200X:localhost:22 userX@gate.isp.un |
+ | <Ctrl-Z> | ||
+ | bg | ||
<Ctrl-D> | <Ctrl-D> | ||
</code> | </code> | ||
- | ===== INT (Ctrl-C) ===== | + | ===== TSTP <Ctrl-Z> ===== |
+ | |||
+ | * [[https://ru.wikipedia.org/wiki/SIGTSTP]] | ||
+ | |||
+ | <code> | ||
+ | # kill -TSTP <PID> | ||
+ | |||
+ | # jobs | ||
+ | |||
+ | # bg ... | ||
+ | |||
+ | # fg ... | ||
+ | </code> | ||
+ | |||
+ | ===== INT <Ctrl-C> ===== | ||
<code> | <code> | ||
# kill -2 <PID> | # kill -2 <PID> | ||
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# kill -STOP <PID> | # kill -STOP <PID> | ||
- | Рекомендую испытать, например, на процессе named или ftpd! | + | # pkill -STOP -u student bash |
- | Идея эксперимента подсказана преподавателем ЦКО “Специалист” Сергеем Борониным:) | + | |
- | </code> | + | |
- | + | ||
- | ===== TSTP (Ctrl-Z) ===== | + | |
- | + | ||
- | [[http://ln.com.ua/~openxs/projects/man/uman121.html]] | + | |
- | <code> | + | |
- | # kill -TSTP <PID> | + | |
- | + | ||
- | # jobs | + | |
</code> | </code> | ||
Line 81: | Line 100: | ||
<code> | <code> | ||
# kill -CONT <PID> | # kill -CONT <PID> | ||
+ | |||
+ | # pkill -CONT -u student bash | ||
# fg %JOBID | # fg %JOBID | ||
Line 89: | Line 110: | ||
===== Дополнительные материалы ===== | ===== Дополнительные материалы ===== | ||
- | [[http://httpd.apache.org/docs/2.2/stopping.html]] | + | * [[http://httpd.apache.org/docs/2.2/stopping.html|Stopping and Restarting Apache]] |