#!/bin/bash
# script to find empty folder in current folder and rename it.
#find empty folder and write it into fef.txt
find . -type d -empty -maxdepth 1 -mindepth 1 | cut -c2- >> fef.txt;

#number line of fef.txt
nl_fef=$(cat fef.txt | wc -l);

#rename loop
for i in {1..$nl_fef};
do

#current folder
f=$(pwd);


#rename folder_name to folder_name.empty
mv $f$i $f$i.empty;

done;