Unpack embedded linux images

#!/bin/bash
clear
cd "$(pwd)"
echo $(pwd) > log.txt
files=($(ls *.bin ))
for i in ${files[@]}
do
    cp -a "$i" "$i.zip"
    echo -n "PK" | dd of="$i.zip"   conv=notrunc
    7z x -aoa -o"${i%.bin}" "$i.zip"; rm "$i.zip"
    Filenames=$(ls ${i%.bin}/*.img)
    for f in ${Filenames[@]}
    do
        clear
        Path=$(echo "$f" | cut -d"/" -f1)/$(echo "$f" | cut -d"/" -f2 | cut -d"-" -f1)
        7z x -aoa -o"$Path" $f
        if ! [ -d "$Path" ]; then
            rm $f
        fi
    done
done