I’ve implemented custom trap codebfor error display but it doesn’t work reliablu, this should help.

#!/usr/bin/env bash

set -o errexit set -o nounset set -o pipefail if [[ “${TRACE-0}” == “1” ]]; then

set -o xtrace

fi

if [[ “${1-}” =~ ^-*h(elp)?$ ]]; then

echo 'Usage: ./script.sh arg-one arg-two

This is an awesome bash script to make your life better.

‘

exit

fi

cd “$(dirname “$0”)”

main() {

echo do awesome stuff

}

main “$@”

This article is about a few quick thumb rules I use when writing shell scripts that I’ve come to appreciate over the years. Very opinionated.