`trap` - run a command when a signal is received

trap [ACTION] SIGNAL...

Options you will use

EXIT: Run on any exit from the shell - the one to use for cleanup.
ERR: Run when a command fails (with set -e semantics).
INT / TERM: Ctrl+C / polite termination.
-l, -p: List signal names; print the current traps.

Examples

$ tmp=$(mktemp -d); trap 'rm -rf "$tmp"' EXIT INT TERM

cleans up on success, failure and Ctrl+C alike

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