shell脚本遍历文件XX中所有的文件夹

cd /Users/XX/
for folder in `ls`; do
    dir="/Users/XX/$folder"
    if [ -d $dir ]; then
        #echo 'cd $folder'
        cd $dir
        echo "now in folder:" $folder
        cd ..
        echo "返回上一级！"
    fi
done