Команда trap: опции, ключи и примеры использования

trap

Automatically execute commands after receiving signals by processes or the operating system. Can be used to perform cleanups for interruptions by the user or other actions.

  • List available signals to set traps for:

trap -l

  • List active traps for the current shell:

trap -p

  • Set a trap to execute commands when one or more signals are detected:

trap 'echo "Caught signal {{SIGHUP}}"' {{SIGHUP}}

  • Remove active traps:

trap - {{SIGHUP}} {{SIGINT}}

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