#!/usr/bin/bash

write_pkginfo() {
	declare -i n size inum=0
	local statopt statfmt

	stat -c '%i' "$0" &> /dev/null && { 	#GNU/linux
		statopt='-c'
		statfmt='%i %s'
	} || {									#freebsd, openbsd, macos
		statopt='-f';
		statfmt='%i %z';
	}

	while read n s; do
		[ $inum -ne $n ] && size=$(( size + s ))
		inum=$n
	done < <( find . -type f -exec stat $statopt "$statfmt" {} + 2>/dev/null | sort )

	echo $size
}
write_pkginfo
# vim: ts=4 sw=4