default-error-behavior.md

Default Error Behavior

set -euo pipefail

Understanding and implementing the following will improve the predictability and reliability of bash scripts.

By default, bash will continue executing after encountering an error. set -e will change this behavior, and halt execution on error.

By default, unset variables won't error. set -u will change this behavior, and halt execution on unset variables.

By default, a single command in a pipeline will not cause the entire pipeline to fail. set -o pipefail will change this behavior, and halt pipeline execution on single command errors.