#!/bin/bash

if [ -z "${1}" ]; then
	echo >&2 "No input file passed!"
	exit 1
fi

prereqs=$(bash --rpm-requires < ${1} | sort | uniq | sed -e 's/^bash(//' -e 's/)$//' -e 's/^executable(//' -e 's/)$//')
[ -z "${prereqs}" ] && exit 0

for prereq in ${prereqs}; do
	case "${prereq}" in
		/*)
			echo ${prereq}
			;;
		*)
			which ${prereq} 2>/dev/null
			;;
	esac
done | sort | uniq