Bash unix signals: Difference between revisions
From wikinotes
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Uninstall a trap | Uninstall a trap | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
trap - SIGINT SIGTRAP | |||
</syntaxhighlight> | </syntaxhighlight> | ||
</blockquote><!-- Callback on Signal --> | </blockquote><!-- Callback on Signal --> |
Revision as of 12:23, 17 July 2021
Documentation
man 7 signal
https://man.archlinux.org/man/core/man-pages/signal.7.en wikipedia: unix signals https://en.wikipedia.org/wiki/Signal_(IPC)#POSIX_signals
Send Signal
kill -l # list all signals kill -9 ${PID} # send signal 9 (SIGKILL) kill -SIGINT ${PID} # send isgnal 2 (SIGINT)
Callback on Signal
Install callback for SIGINT and SIGTRAP
on_signal() { echo "received SIGINT or SIGTRAP!" } trap on_signal SIGINT SIGTRAPUninstall a trap
trap - SIGINT SIGTRAP