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#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail
if [[ "${TRACE-0}" == "1" ]]; then
set -o xtrace
fi
prompt_confirm() {
while true; do
read -r -n 1 -p "${1:-Continue?} [y/n]: " REPLY
case $REPLY in
[yY]) echo ; return 0 ;;
[nN]) echo ; return 1 ;;
*) printf " \033[31m %s \n\033[0m" "invalid input"
esac
done
}
help() {
echo 'Usage: ./script.sh arg-one arg-two
This is an awesome bash script to make your life better.
'
exit
}
if [[ "${1-}" =~ ^-*h(elp)?$ ]]; then
help
fi
cd "$(dirname "$0")"
main() {
prompt_confirm "print help?" || exit 0
help
}
main "$@"
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