rm -rf test_files
python3 gen_test_files.py
rm -rf ex4.img
dd if=/dev/zero of=ex4.img bs=1M count=4096
mkfs.ext4 ./ex4.img

## create link
cd test_files
sudo ln -s ./1.txt ./linktest
cd ..

## copy files to image
mkdir tmp
sudo mount ./ex4.img ./tmp/
cd tmp
sudo mkdir -p test_files
mkdir -p dir_to_remove
sudo cp ../test_files/* ./test_files/

cd ../
sudo umount tmp

## run
cargo run LOG=trace

## write check
sudo mount ./ex4.img ./tmp/
cd tmp
ls
cd test_files
ls
cd ../../
sudo umount ./tmp