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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 causes.

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 '{{shell_commands}}' {{signal_names}}

Remove active traps:

trap - {{signal_names}}

Set a trap to delete a file after the user has interrupted a download:

trap 'rm -i master.zip' SIGINT ERR