bash script template

script.sh

#!/usr/bin/env bash

# Template from: https://sharats.me/posts/shell-script-best-practices/

set -o errexit
set -o nounset
set -o pipefail
if [[ "${TRACE-0}" == "1" ]]; then
    set -o xtrace
fi

if [[ "${1-}" =~ ^-*h(elp)?$ ]]; then
# if [[ "$#" -ne 2 ]] || [[ "${1-}" =~ ^-*h(elp)?$ ]]; then # [OP2] make $1 and $2 mandatory
    echo 'Usage: ./script.sh arg-one arg-two
This is an awesome bash script to make your life better.
Run with "$ TRACE=1 bash <scriptname>.sh" for debug.
'
    exit
fi

cd "$(dirname "$0")"

ARG1=${1:-foo} # [OP2] $1 if mandatory
ARG2=${2:-foo} # [OP2] $2 if mandatory

main() {
    echo do awesome stuff
}

main "$@"