Always use set -eou pipefail at the beginning of shell scripts to ensure consistent error handling and behavior across the codebase. This combination provides important safety guarantees:
-e: Exit immediately if any command exits with non-zero status-o: Error on undefined variables instead of treating them as empty-u: Treat unset variables as an errorpipefail: Return value of a pipeline is the status of the last command to exit with non-zero statusExample:
# Incorrect
set -eu -o pipefail
# or
set -evx
# Correct
set -eou pipefail
This standard helps prevent subtle bugs caused by unhandled errors or undefined variables and makes scripts more robust and predictable.
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