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.

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• 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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