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сигналы
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сигналы [2014/01/30 15:24] val [INT (Ctrl-C)] |
сигналы [2021/07/08 08:02] admin [Отправка сигнала] |
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| ====== Сигналы ====== | ====== Сигналы ====== | ||
| - | [[http://ru.wikipedia.org/wiki/Сигналы_(UNIX)]] | + | * [[https://ru.wikipedia.org/wiki/Сигналы_(UNIX)#Сигналы (UNIX) - Википедия]] |
| - | ===== PID ===== | ||
| <code> | <code> | ||
| - | # ps ax | grep named | grep -v grep | + | # kill -l |
| + | </code> | ||
| + | ===== Определение PID процесса ===== | ||
| + | <code> | ||
| + | # /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 -<SIGNAL> <PID> | # kill -<SIGNAL> <PID> | ||
| - | # killall -<SIGNAL> named | + | # plill -<SIGNAL> sshd |
| + | |||
| + | # apt install psmisc | ||
| + | |||
| + | # killall -<SIGNAL> sshd | ||
| + | </code> | ||
| + | |||
| + | ===== TERM ===== | ||
| + | |||
| + | * чаще всего - остановка процесса | ||
| + | |||
| + | <code> | ||
| + | # kill <PID> | ||
| + | |||
| + | # kill -TERM <PID> | ||
| </code> | </code> | ||
| ===== HUP ===== | ===== HUP ===== | ||
| + | |||
| + | * чаще всего - освободить терминал или перечитать файл конфигурации | ||
| + | |||
| <code> | <code> | ||
| # kill -1 <PID> | # kill -1 <PID> | ||
| Line 26: | Line 50: | ||
| </code> | </code> | ||
| - | ===== INT (Ctrl-C) ===== | + | ===== INT <Ctrl-C> ===== |
| <code> | <code> | ||
| - | |||
| - | |||
| # kill -2 <PID> | # kill -2 <PID> | ||
| Line 35: | Line 58: | ||
| </code> | </code> | ||
| - | ===== TERM ===== | ||
| - | <code> | ||
| - | # kill <PID> | ||
| - | # kill -TERM <PID> | ||
| - | </code> | ||
| ===== KILL ===== | ===== KILL ===== | ||
| <code> | <code> | ||
| Line 61: | Line 79: | ||
| # 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> | </code> | ||
| - | ===== TSTP (Ctrl-Z) ===== | + | ===== TSTP <Ctrl-Z> ===== |
| + | |||
| + | * [[https://ru.wikipedia.org/wiki/SIGTSTP]] | ||
| - | [[http://ln.com.ua/~openxs/projects/man/uman121.html]] | ||
| <code> | <code> | ||
| # kill -TSTP <PID> | # kill -TSTP <PID> | ||
| # jobs | # jobs | ||
| + | |||
| + | # bg ... | ||
| + | |||
| + | # fg ... | ||
| </code> | </code> | ||
| Line 77: | Line 99: | ||
| <code> | <code> | ||
| # kill -CONT <PID> | # kill -CONT <PID> | ||
| + | |||
| + | # pkill -STOP -u student bash | ||
| # fg %JOBID | # fg %JOBID | ||
| Line 85: | Line 109: | ||
| ===== 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]] |
сигналы.txt · Last modified: 2021/10/04 09:01 by val
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