#!/bin/sh
src="$1"
dst="$2"
if [ ! -d $src ]; then
exit 0
fi
files=$(cd $src; find -name "*.xz")
for f in $files; do
df=$(echo $f \
| sed 's/\.xz$//')
if [ -f $dst/$df ]; then
continue
cp $src/$f $dst/$f
xz -d $dst/$f
done