#!/bin/sh

dir="$1"
cd $dir || exit 1

for f in *.rpm ; do
	g=$(rpm --qf '%{GROUP}' -qp $f)
	level=".."
	a="$g"
	b=
	while [ "$a" != "$b" ]; do
		b="$a"
		a=${a#*/}
		level="${level}/.."
	done
	[ -d "../by-group/$g" ] || mkdir -p "../by-group/$g"
	ln -sf "$level/RPMS/$f" "../by-group/$g/$f"
done

# remove dangling symlinks...
symlinks -dr $dir/../by-group
# and empty directories
find $dir/../by-group -depth -type d -empty -exec rmdir {} \;