#!/bin/sh

if [ "$1" == "-h" ]
then
 echo "Flattens directory structure."
 echo "Renames dir1/dir2/file.txt to dir1.dir2.file.txt"
 echo "arguments: [dir]"
 exit 1

else if [ -n "$1" ]
then
 cd "$1"
fi

fi

find . -type f | while read F
do
 DF=` echo "$F" | sed -e 's@^./@@' -e 's@/@.@g' `
 mv  -v "$F" "$DF"
done